From 4ea2bd2 Mon Sep 17 00:00:00 2001
From: Owen Kirby <osk@exegin.com>
Date: Wed, 16 Apr 2014 17:45:18 -0700
Subject: [PATCH] Fix AT91 UDC driver on boards without vbus.

While porting Barebox to one of our boards, we found that the AT91 UDC driver
will fail to connect to USB hosts, and will spam the console with errors if
the VBUS pin isn't connected.

Signed-off-by: Owen Kirby <osk@exegin.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>