[coreboot] Patch merged into coreboot/master: 6d04f0f haswell: always use MMIO PCI config accesses

the following patch was just integrated into master:
commit 6d04f0f89e4bf8ea4bea35dd850dad7469ca5ab3
Author: Aaron Durbin 
Date:   Wed Oct 31 22:57:16 2012 -0500

haswell: always use MMIO PCI config accesses

Add a bootblock.c file for the northbridge and setup the
    PCIEXBAR as the first thing using IO PCI config acceses.
    After that all PCI config accesses can use MMIO.

Change-Id: I51d229c626c45705dda1757c2f14265cbc0e6183
    Signed-off-by: Aaron Durbin 
    Reviewed-on: http://review.coreboot.org/2617
    Tested-by: build bot (Jenkins)
    Reviewed-by: Ronald G. Minnich

Build-Tested: build bot (Jenkins) at Mon Mar 11 23:44:11 2013, giving +1
Reviewed-By: Ronald G. Minnich  at Thu Mar 14 01:45:50 2013, giving +2
See http://review.coreboot.org/2617 for details.

-gerrit