staging: greybus: add SPDX identifiers to all greybus driver files

It's good to have SPDX identifiers in all files to make it easier to
audit the kernel tree for correct licenses.

Update the drivers/staging/greybus files files with the correct SPDX
license identifier based on the license text in the file itself.  The
SPDX identifier is a legally binding shorthand, which can be used
instead of the full boiler plate text.

This work is based on a script and data from Thomas Gleixner, Philippe
Ombredanne, and Kate Stewart.

Cc: Vaibhav Hiremath <hvaibhav.linux@gmail.com>
Cc: "Bryan O'Donoghue" <pure.logic@nexus-software.ie>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Kate Stewart <kstewart@linuxfoundation.org>
Cc: Philippe Ombredanne <pombredanne@nexb.com>
Acked-by: NVaibhav Agarwal <vaibhav.sr@gmail.com>
Acked-by: NDavid Lin <dtwlin@gmail.com>
Reviewed-by: NAlex Elder <elder@linaro.org>
Acked-by: NJohan Hovold <johan@kernel.org>
Acked-by: NViresh Kumar <viresh.kumar@linaro.org>
Acked-by: NMark Greer <mgreer@animalcreek.com>
Acked-by: NRui Miguel Silva <rmfrfs@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/greybus/Documentation/firmware/authenticate.c

+// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
 /*
  * Sample code to test CAP protocol
  *

drivers/staging/greybus/Documentation/firmware/firmware.c

+// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
 /*
  * Sample code to test firmware-management protocol
  *

drivers/staging/greybus/arche-apb-ctrl.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Arche Platform driver to control APB.
  *

drivers/staging/greybus/arche-platform.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Arche Platform driver to enable Unipro link.
  *

drivers/staging/greybus/arche_platform.h

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Arche Platform driver to enable Unipro link.
  *

drivers/staging/greybus/arpc.h

+// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
 /*
  * This file is provided under a dual BSD/GPLv2 license.  When using or
  * redistributing this file, you may do so under either license.

drivers/staging/greybus/audio_apbridgea.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus Audio Device Class Protocol helpers
  *

drivers/staging/greybus/audio_apbridgea.h

+// SPDX-License-Identifier: BSD-3-Clause
 /**
  * Copyright (c) 2015-2016 Google Inc.
  * All rights reserved.

drivers/staging/greybus/audio_codec.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * APBridge ALSA SoC dummy codec driver
  * Copyright 2016 Google Inc.

drivers/staging/greybus/audio_codec.h

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus audio driver
  * Copyright 2015 Google Inc.

drivers/staging/greybus/audio_gb.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus Audio Device Class Protocol helpers
  *

drivers/staging/greybus/audio_manager.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus operations
  *

drivers/staging/greybus/audio_manager.h

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus operations
  *

drivers/staging/greybus/audio_manager_module.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus operations
  *

drivers/staging/greybus/audio_manager_private.h

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus operations
  *

drivers/staging/greybus/audio_manager_sysfs.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus operations
  *

drivers/staging/greybus/audio_module.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus audio driver
  * Copyright 2015 Google Inc.

drivers/staging/greybus/audio_topology.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus audio driver
  * Copyright 2015-2016 Google Inc.

drivers/staging/greybus/authentication.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus Component Authentication Protocol (CAP) Driver.
  *

drivers/staging/greybus/bootrom.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * BOOTROM Greybus driver.
  *

drivers/staging/greybus/bundle.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus bundles
  *

drivers/staging/greybus/bundle.h

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus bundles
  *

drivers/staging/greybus/camera.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus Camera protocol driver.
  *

drivers/staging/greybus/connection.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus connections
  *

drivers/staging/greybus/connection.h

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus connections
  *

drivers/staging/greybus/control.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus CPort control protocol.
  *

drivers/staging/greybus/control.h

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus CPort control protocol
  *

drivers/staging/greybus/core.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus "Core"
  *

drivers/staging/greybus/debugfs.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus debugfs code
  *

drivers/staging/greybus/es2.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus "AP" USB driver for "ES2" controller chips
  *

drivers/staging/greybus/firmware.h

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus Firmware Management Header
  *

drivers/staging/greybus/fw-core.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus Firmware Core Bundle Driver.
  *

drivers/staging/greybus/fw-download.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus Firmware Download Protocol Driver.
  *

drivers/staging/greybus/fw-management.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus Firmware Management Protocol Driver.
  *

drivers/staging/greybus/gb-camera.h

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus Camera protocol driver.
  *

drivers/staging/greybus/gbphy.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus Bridged-Phy Bus driver
  *

drivers/staging/greybus/gbphy.h

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus Bridged-Phy Bus driver
  *

drivers/staging/greybus/gpio.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * GPIO Greybus driver.
  *

drivers/staging/greybus/greybus.h

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus driver and device API
  *

drivers/staging/greybus/greybus_authentication.h

+// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
 /*
  * Greybus Component Authentication User Header
  *

drivers/staging/greybus/greybus_firmware.h

+// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
 /*
  * Greybus Firmware Management User Header
  *

drivers/staging/greybus/greybus_manifest.h

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus manifest definition
  *

drivers/staging/greybus/greybus_protocols.h

+// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
 /*
  * This file is provided under a dual BSD/GPLv2 license.  When using or
  * redistributing this file, you may do so under either license.

drivers/staging/greybus/greybus_trace.h

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus driver and device API
  *

drivers/staging/greybus/hd.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus Host Device
  *

drivers/staging/greybus/hd.h

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus Host Device
  *

drivers/staging/greybus/hid.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * HID class driver for the Greybus.
  *

drivers/staging/greybus/i2c.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * I2C bridge driver for the Greybus "generic" I2C module.
  *

drivers/staging/greybus/interface.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus interface code
  *

drivers/staging/greybus/interface.h

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus Interface Block code
  *

drivers/staging/greybus/light.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus Lights protocol driver.
  *

drivers/staging/greybus/log.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus driver for the log protocol
  *

drivers/staging/greybus/loopback.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Loopback bridge driver for the Greybus loopback module.
  *

drivers/staging/greybus/manifest.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus manifest parsing
  *

drivers/staging/greybus/manifest.h

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus manifest parsing
  *

drivers/staging/greybus/module.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus Module code
  *

drivers/staging/greybus/module.h

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus Module code
  *

drivers/staging/greybus/operation.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus operations
  *

drivers/staging/greybus/operation.h

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus operations
  *

drivers/staging/greybus/power_supply.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Power Supply driver for a Greybus module.
  *

drivers/staging/greybus/pwm.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * PWM Greybus driver.
  *

drivers/staging/greybus/raw.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus driver for the Raw protocol
  *

drivers/staging/greybus/sdio.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * SD/MMC Greybus driver.
  *

drivers/staging/greybus/spi.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * SPI bridge PHY driver.
  *

drivers/staging/greybus/spilib.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus SPI library
  *

drivers/staging/greybus/spilib.h

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus SPI library header
  *

drivers/staging/greybus/svc.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * SVC Greybus driver.
  *

drivers/staging/greybus/svc.h

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus SVC code
  *

drivers/staging/greybus/svc_watchdog.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * SVC Greybus "watchdog" driver.
  *

drivers/staging/greybus/tools/lbtest

 #!/usr/bin/env python
+# SPDX-License-Identifier: BSD-3-Clause
 
 # Copyright (c) 2015 Google, Inc.
 # Copyright (c) 2015 Linaro, Ltd.

drivers/staging/greybus/tools/loopback_test.c

+// SPDX-License-Identifier: BSD-3-Clause
 /*
  * Loopback test application
  *

drivers/staging/greybus/uart.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * UART driver for the Greybus "generic" UART module.
  *

drivers/staging/greybus/usb.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * USB host driver for the Greybus "generic" USB module.
  *

drivers/staging/greybus/vibrator.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Greybus Vibrator protocol driver.
  *