platform: msm_shared: Correct the USB function prototype to avoid compiler warning.

The usb function ep0_setup_ack_complete takes the function paramters
which are not used. Hence remove them.

CRs-Fixed: 574858
Change-Id: I66ca84d7afe70cc69b3defd8704bf96302daa0bf
diff --git a/platform/msm_shared/hsusb.c b/platform/msm_shared/hsusb.c
index 02a15db..a739f9b 100644
--- a/platform/msm_shared/hsusb.c
+++ b/platform/msm_shared/hsusb.c
@@ -2,7 +2,7 @@
  * Copyright (c) 2008, Google Inc.
  * All rights reserved.
  *
- * Copyright (c) 2009-2013, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2009-2014, The Linux Foundation. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
@@ -476,7 +476,7 @@
 static struct udc_request *ep0req;
 
 static void
-ep0_setup_ack_complete(struct udc_endpoint *ep, struct usb_request *req)
+ep0_setup_ack_complete()
 {
 	uint32_t mode;