Patch merged into coreboot/master: 7b5f093 south_station: Enable GNB hd audio

the following patch was just integrated into master:
commit 7b5f093920dc0918eb620bac184588333e7ef7cc
Author: Kerry Sheh 
Date:   Wed Nov 23 15:04:13 2011 +0800

south_station: Enable GNB hd audio

Enable HD audio over HDMI.
    Tested in Ubuntu-11.10 with ATI Catalyst Proprietary Driver installed.

Change-Id: I013c2c15ee56a7b134d980da1aa1856778a1eb4c
    Signed-off-by: Kerry Sheh 
    Signed-off-by: Kerry Sheh

Build-Tested: build bot (Jenkins) at Wed Nov 23 07:43:19 2011, giving +1
Reviewed-By: Marc Jones  at Tue Dec 20 07:28:39 2011, giving +2
See http://review.coreboot.org/450 for details.

-gerrit