drivers: usb: fix missing code

Author: dastin1015

drivers/usb/core/message.c

@@ -1770,6 +1770,10 @@ int usb_set_configuration(struct usb_device *dev, int configuration)
 		goto free_interfaces;
 	}
 
+	dev->actconfig = cp;
+	if (cp)
+	  usb_notify_config_device(dev);
+
 	/* Initialize the new interface structures and the
 	 * hc/hcd/usbcore interface/endpoint state.
 	 */