[coreboot] Patch merged into coreboot/master: c3b4a5e sync the northbridge.c with other family.

the following patch was just integrated into master:
commit c3b4a5e90ef23b10d37fa89d0a633982d5a329cd
Author: zbao 
Date:   Mon Jul 23 19:41:03 2012 +0800

sync the northbridge.c with other family.

Change-Id: Ice4d0202590fca0169dcda2770ca6add166b5c13
    Signed-off-by: Zheng Bao 
    Signed-off-by: zbao

Build-Tested: build bot (Jenkins) at Mon Jul 23 12:32:35 2012, giving +1
See http://review.coreboot.org/1262 for details.

-gerrit