sdio: UART/GPS driver

This currently only accepts the GPS class since that's all I have for
testing.  Tested with a Matsushita GPS and gpsd version 2.34.
Signed-off-by: Nicolas Pitre <npitre@mvista.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>

drivers/mmc/card/Kconfig

@@ -32,3 +32,10 @@ config MMC_BLOCK_BOUNCE
 
 	  If unsure, say Y here.
 
+config SDIO_UART
+	tristate "SDIO UART/GPS class support"
+	depends on MMC
+	help
+	  SDIO function driver for SDIO cards that implements the UART
+	  class, as well as the GPS class which appears like a UART.
+

drivers/mmc/card/Makefile

@@ -9,3 +9,5 @@ endif
 obj-$(CONFIG_MMC_BLOCK)		+= mmc_block.o
 mmc_block-objs			:= block.o queue.o
 
+obj-$(CONFIG_SDIO_UART)		+= sdio_uart.o
+