[coreboot-gerrit] Patch merged into coreboot/master: nb/i945/gma.c: Set the MSAC register correctly

the following patch was just integrated into master:
commit c057a0611b9f5bb66ad3bd54890991eec7838192
Author: Arthur Heymans 
Date:   Sat Oct 22 14:16:48 2016 +0200

nb/i945/gma.c: Set the MSAC register correctly

This fixes an instability on 945gc where the IGD completely locks
    up the system, when for instance tasked to do something with
    compositing (like GNOME or GDM).

TESTED on ga-945gcm-s2l and d945gclf
    TEST: launch GDM (gnome display manager)

Change-Id: Iec49bccf3e3164df9dc1e0b54460a616fe92e04d
    Signed-off-by: Arthur Heymans 
    Reviewed-on: https://review.coreboot.org/17094
    Reviewed-by: Nico Huber 
    Tested-by: build bot (Jenkins)

See https://review.coreboot.org/17094 for details.

-gerrit