USB:gadget:designware USB device controller (UDC) implementation

The earlier usb device controller driver was specific to spear platforms. This
patch implements the usb device controller driver as a generic controller which
can be reused by other platforms using this peripheral.

Signed-off-by: Vipin Kumar <vipin.kumar@st.com>
Signed-off-by: Amit Virdi <amit.virdi@st.com>
Acked-by: Marek Vasut <marex@denx.de>
diff --git a/include/usb/spr_udc.h b/include/usb/designware_udc.h
similarity index 98%
rename from include/usb/spr_udc.h
rename to include/usb/designware_udc.h
index 2c332d5..ae98e8c 100644
--- a/include/usb/spr_udc.h
+++ b/include/usb/designware_udc.h
@@ -21,8 +21,8 @@
  * MA 02111-1307 USA
  */
 
-#ifndef __SPR_UDC_H
-#define __SPR_UDC_H
+#ifndef __DW_UDC_H
+#define __DW_UDC_H
 
 /*
  * Defines for  USBD
@@ -227,4 +227,4 @@
 void udc_setup_ep(struct usb_device_instance *device, unsigned int ep,
 		  struct usb_endpoint_instance *endpoint);
 
-#endif /* __SPR_UDC_H */
+#endif /* __DW_UDC_H */