usb: gadget: Update m66592-udc to use usb_endpoint_descriptor inside the struct usb_ep

Remove redundant pointer to struct usb_endpoint_descriptor.

Signed-off-by: Ido Shayevitz <idos@codeaurora.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
diff --git a/drivers/usb/gadget/m66592-udc.h b/drivers/usb/gadget/m66592-udc.h
index 9d9f7e3..88c85b4 100644
--- a/drivers/usb/gadget/m66592-udc.h
+++ b/drivers/usb/gadget/m66592-udc.h
@@ -456,7 +456,7 @@
 	unsigned		use_dma:1;
 	u16			pipenum;
 	u16			type;
-	const struct usb_endpoint_descriptor	*desc;
+
 	/* register address */
 	unsigned long		fifoaddr;
 	unsigned long		fifosel;