ARM: S3C: Rename s3c_device_usb to s3c_device_ohci

Prepare for the forthcoming device changes by renaming s3c_device_usb to
s3c_device_ohci as this is what the device represents.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
diff --git a/arch/arm/mach-s3c6410/mach-hmt.c b/arch/arm/mach-s3c6410/mach-hmt.c
index cdd4b53..284886c 100644
--- a/arch/arm/mach-s3c6410/mach-hmt.c
+++ b/arch/arm/mach-s3c6410/mach-hmt.c
@@ -233,7 +233,7 @@
 	&s3c_device_i2c0,
 	&s3c_device_nand,
 	&s3c_device_fb,
-	&s3c_device_usb,
+	&s3c_device_ohci,
 	&s3c_device_timer[1],
 	&hmt_backlight_device,
 	&hmt_leds_device,