usb: gadget: s3c2410: convert to udc_start/udc_stop

Mechanical change making use of the new (can we
still call it new ?) interface for registering
UDC drivers.

Signed-off-by: Felipe Balbi <balbi@ti.com>
diff --git a/drivers/usb/gadget/s3c2410_udc.h b/drivers/usb/gadget/s3c2410_udc.h
index 3e80fd5..93bf225 100644
--- a/drivers/usb/gadget/s3c2410_udc.h
+++ b/drivers/usb/gadget/s3c2410_udc.h
@@ -95,5 +95,6 @@
 	u8				vbus;
 	struct dentry			*regs_info;
 };
+#define to_s3c2410(g)	(container_of((g), struct s3c2410_udc, gadget))
 
 #endif