Patch merged into coreboot/master: 4ca7213 AMD Olive Hill: Disable NoSnoopEnable to fix HDMI audio corruptions with Ubuntu

the following patch was just integrated into master:
commit 4ca721399cdb8012f9ac81e20129afe5ddda84cc
Author: WANG Siyuan 
Date:   Sun Sep 22 15:20:37 2013 +0800

AMD Olive Hill: Disable NoSnoopEnable to fix HDMI audio corruptions with Ubuntu

Ubuntu's HDMI audio has noise and echo. Disable NoSnoopEnable can
    resolve this issue.
    I have tested on Ubuntu 13.04 with AMD Catalyst 13.4 Proprietary
    Linux Display Driver[1].

[1]. http://support.amd.com/us/gpudownload/linux/Pages/radeon_linux.aspx

Change-Id: I5d2dddb1b7469d56cd64e3c1e0f4c6c6f095b4ab
    Signed-off-by: WANG Siyuan 
    Signed-off-by: WANG Siyuan 
    Reviewed-on: http://review.coreboot.org/3934
    Tested-by: build bot (Jenkins)
    Reviewed-by: Dave Frodin

See http://review.coreboot.org/3934 for details.

-gerrit