[coreboot] Patch merged into coreboot/master: f71950a libpayload: Shutdown reasonably if we can't init usb msc device

the following patch was just integrated into master:
commit f71950a28efd954c43e7ed2f6ac940c0935f5971
Author: Nico Huber 
Date:   Thu Jun 21 10:52:49 2012 +0200

libpayload: Shutdown reasonably if we can't init usb msc device

This lets the init of usb mass storage return if the device
    configuration is unusable. Also add some checks for proper shutdown so
    we don't free/remove an uninitialized device.

Change-Id: I6daf9b38e632b6e381bcd5a7717f0f1a3150b64a
    Signed-off-by: Nico Huber

See http://review.coreboot.org/1130 for details.

-gerrit