staging: emxx_udc: Add Emma Mobile USB Gadget driver

Add the emxx_udc driver to staging based on an old linux-2.6.35.7
android tree. The driver has been brushed up slightly to complile
but it is still in great need of cleanup.

At this point DT bindings are clearly lacking and I doubt that the
driver even can run with multiple instances (global variables, hurray!).

Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/Kconfig

@@ -90,6 +90,8 @@ source "drivers/staging/tidspbridge/Kconfig"
 
 source "drivers/staging/quickstart/Kconfig"
 
+source "drivers/staging/emxx_udc/Kconfig"
+
 source "drivers/staging/keucr/Kconfig"
 
 source "drivers/staging/bcm/Kconfig"

drivers/staging/Makefile

@@ -39,6 +39,7 @@ obj-$(CONFIG_CXT1E1)		+= cxt1e1/
 obj-$(CONFIG_FB_XGI)		+= xgifb/
 obj-$(CONFIG_TIDSPBRIDGE)	+= tidspbridge/
 obj-$(CONFIG_ACPI_QUICKSTART)	+= quickstart/
+obj-$(CONFIG_USB_EMXX)		+= emxx_udc/
 obj-$(CONFIG_USB_ENESTORAGE)	+= keucr/
 obj-$(CONFIG_BCM_WIMAX)		+= bcm/
 obj-$(CONFIG_FT1000)		+= ft1000/

drivers/staging/emxx_udc/Kconfig

@@ -0,0 +1,10 @@
+config USB_EMXX
+	boolean "EMXX USB Function Device Controller"
+ 	depends on USB_GADGET && (ARCH_SHMOBILE || (ARM && COMPILE_TEST))
+	help
+	   The Emma Mobile series of SoCs from Renesas Electronics and
+	   former NEC Electronics include USB Function hardware.
+
+	   Say "y" to link the driver statically, or "m" to build a
+	   dynamically linked module called "emxx_udc" and force all
+	   gadget drivers to also be dynamically linked.

drivers/staging/emxx_udc/Makefile

@@ -0,0 +1 @@
+obj-$(CONFIG_USB_EMXX)	:= emxx_udc.o