[coreboot] Patch merged into coreboot/master: 5d901c1 libpayload: style: compare null-pointers with NULL, not 0

the following patch was just integrated into master:
commit 5d901c1f09cbf1c7b633c96bdcd6d654581bcfbf
Author: Patrick Georgi 
Date:   Fri Nov 18 11:56:38 2011 +0100

libpayload: style: compare null-pointers with NULL, not 0

Change-Id: I5efbfb75e2894bc8d8e50c8737cfee9738d15eda
    Signed-off-by: Patrick Georgi

Build-Tested: build bot (Jenkins) at Wed Jan 18 13:55:15 2012, giving +1
Reviewed-By: Peter Stuge  at Wed Jan 18 14:00:04 2012, giving +2
See http://review.coreboot.org/551 for details.

-gerrit