This saves over 30 lines and fixes a warning from sparse and allows
debugging to work dynamically like all other usb-serial drivers.

Cc: Kevin Lloyd <linux@sierrawireless.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

The largest feature in this patch is that it adds significant throughput
increase to the Sierra driver and adds support for modem status line
control (e.g. the DTR line). This patch also updates the current sierra.c
driver so that it supports both 3-port Sierra devices and 1-port legacy
devices and removes Sierra's references in other related files (Kconfig and
airprime.c).
Signed-off-by: NKevin Lloyd  <linux@sierrawireless.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

USB serial outside of the kernel tree can not build properly due to
usb-serial.h being buried down in the source tree.  This patch moves the
location of the file to include/linux/usb and fixes up all of the usb
serial drivers to handle the move properly.

Cc: Sergei Organov <osv@javad.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

This patch creates a new driver, sierra.c, that supports the new
non-composite Sierra Wireless WWAN devices. The older Sierra
Wireless and Airprime devices are supported in airprime.c.
Signed-off-by: NKevin Lloyd  <linux@sierrawireless.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>