Patch merged into coreboot/master: nb/intel/x4x: Fix unpopulated value

the following patch was just integrated into master:
commit 68e1dcfdd940db05c282c601b58dd86f97b44767
Author: Damien Zammit 
Date:   Fri Jun 3 15:39:30 2016 +1000

nb/intel/x4x: Fix unpopulated value

Previously, 0x0 was the value being used for an unpopulated dimm
    on spd[62], however some DDR2 dimms have 0x0 as a valid value.
    Now use 0xff which is an unused value even on DDR2/DDR3.

Change-Id: I55a91a6c3fe3733a7bb2abc45ca352c955c07c99
    Signed-off-by: Damien Zammit 
    Reviewed-on: https://review.coreboot.org/15058
    Tested-by: build bot (Jenkins)
    Reviewed-by: Paul Menzel 
    Reviewed-by: Martin Roth

See https://review.coreboot.org/15058 for details.

-gerrit