Patch merged into coreboot/master: cpu/amd: Fix AMD Family 15h ECC initialization reliability issues

the following patch was just integrated into master:
commit 38508a0ff1b0bcdadc779ae8a8a422638d4612d9
Author: Timothy Pearson 
Date:   Thu Jun 25 15:07:34 2015 -0500

cpu/amd: Fix AMD Family 15h ECC initialization reliability issues

There were numerous issues surrounding AMD ECC initialization on
    Family 15h processors due to the incomplete derivation from Family
    10h MCT code.  Bring the Family 15h ECC initialization and supporting
    setup code in line with the BKDG recommendations.

Change-Id: I7f009b655f8500aeb22981f7020f1db74cdd6925
    Signed-off-by: Timothy Pearson 
    Reviewed-on: http://review.coreboot.org/12003
    Tested-by: build bot (Jenkins)
    Reviewed-by: Alexandru Gagniuc

See http://review.coreboot.org/12003 for details.

-gerrit