usb: gadget: lpc32xx_udc: Propagate devicetree to gadget drivers

Fill dev.of_node of gadget drivers, so they can use devicetree
Signed-off-by: Alexandre Pereira da Silva <aletes.xgr@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

drivers/usb/gadget/lpc32xx_udc.c

@@ -3005,6 +3005,7 @@ static int lpc32xx_start(struct usb_gadget_driver *driver,
 
 	udc->driver = driver;
 	udc->gadget.dev.driver = &driver->driver;
+	udc->gadget.dev.of_node = udc->dev->of_node;
 	udc->enabled = 1;
 	udc->selfpowered = 1;
 	udc->vbus = 0;