[ARM] S3C: Add common USB OHCI device definition

Add common definition for USB OHCI platform device, add a Kconfig
to selectively compile it and add update all the users.

Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
diff --git a/arch/arm/plat-s3c/Makefile b/arch/arm/plat-s3c/Makefile
index 8d7815d..aa995a4 100644
--- a/arch/arm/plat-s3c/Makefile
+++ b/arch/arm/plat-s3c/Makefile
@@ -30,3 +30,4 @@
 obj-y				+= dev-i2c0.o
 obj-$(CONFIG_S3C_DEV_I2C1)	+= dev-i2c1.o
 obj-$(CONFIG_S3C_DEV_FB)	+= dev-fb.o
+obj-$(CONFIG_S3C_DEV_USB_HOST)	+= dev-usb.o