Patch merged into coreboot/master: 05efa9e mtrr: only add prefetchable resources as WRCOMB for VGA devices

the following patch was just integrated into master:
commit 05efa9e58f2488fa611257c6296d10f20d06bca0
Author: Aaron Durbin 
Date:   Sat Feb 8 15:41:52 2014 -0600

mtrr: only add prefetchable resources as WRCOMB for VGA devices

Be more conservative and only add VGA devices' prefetchable
    resources as write-combining in the address space. Previously
    all prefetchable memory was added as a write-combining memory
    type. Some hardware incorrectly advertises its BAR as
    prefetchable when it shouldn't be.

A new memranges_add_resources_filter() function is added
    to provide additional filtering on device and resource.

Change-Id: I3fc55b90d8c5b694c5aa9e2f34db1b4ef845ce10
    Signed-off-by: Aaron Durbin

See http://review.coreboot.org/5169 for details.

-gerrit