caif-u5500: Build config for CAIF shared mem driver

Signed-off-by: NSjur Braendeland <sjur.brandeland@stericsson.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/caif/Kconfig

@@ -31,3 +31,10 @@ config CAIF_SPI_SYNC
 	Putting the next command and length in the start of the frame can
 	help to synchronize to the next transfer in case of over or under-runs.
 	This option also needs to be enabled on the modem.
+
+config CAIF_SHM
+	tristate "CAIF shared memory protocol driver"
+	depends on CAIF && U5500_MBOX
+	default n
+	---help---
+	The CAIF shared memory protocol driver for the STE UX5500 platform.

drivers/net/caif/Makefile

@@ -8,3 +8,7 @@ obj-$(CONFIG_CAIF_TTY) += caif_serial.o
 # SPI slave physical interfaces module
 cfspi_slave-objs := caif_spi.o caif_spi_slave.o
 obj-$(CONFIG_CAIF_SPI_SLAVE) += cfspi_slave.o
+
+# Shared memory
+caif_shm-objs := caif_shmcore.o caif_shm_u5500.o
+obj-$(CONFIG_CAIF_SHM) += caif_shm.o