[NET]: Use random address in usbnet driver.

drivers/usb/net/usbnet.c

@@ -3414,9 +3414,7 @@ static int __init usbnet_init (void)
 			< sizeof (struct cdc_state)));
 #endif
 
-	get_random_bytes (node_id, sizeof node_id);
-	node_id [0] &= 0xfe;	// clear multicast bit
-	node_id [0] |= 0x02;    // set local assignment bit (IEEE802)
+	random_ether_addr(node_id);
 
  	return usb_register(&usbnet_driver);
 }