usb: gadget: net2272: use common is_selfpowered

Delete private selfpowered variable, and use common one.
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

drivers/usb/gadget/udc/net2272.c

@@ -1132,13 +1132,10 @@ net2272_wakeup(struct usb_gadget *_gadget)
 static int
 net2272_set_selfpowered(struct usb_gadget *_gadget, int value)
 {
-	struct net2272 *dev;
-
 	if (!_gadget)
 		return -ENODEV;
-	dev = container_of(_gadget, struct net2272, gadget);
 
-	dev->is_selfpowered = value;
+	_gadget->is_selfpowered = (value != 0);
 
 	return 0;
 }
@@ -1844,7 +1841,7 @@ net2272_handle_stat0_irqs(struct net2272 *dev, u8 stat)
 			case USB_RECIP_DEVICE:
 				if (u.r.wLength > 2)
 					goto do_stall;
-				if (dev->is_selfpowered)
+				if (dev->gadget.is_selfpowered)
 					status = (1 << USB_DEVICE_SELF_POWERED);
 
 				/* don't bother with a request object! */

drivers/usb/gadget/udc/net2272.h

@@ -458,7 +458,6 @@ struct net2272 {
 	struct usb_gadget_driver *driver;
 	unsigned protocol_stall:1,
 	         softconnect:1,
-	         is_selfpowered:1,
 	         wakeup:1,
 	         dma_eot_polarity:1,
 	         dma_dack_polarity:1,