[coreboot-gerrit] Patch merged into coreboot/master: chromeos/vboot: provide support for x86 memory init verification

the following patch was just integrated into master:
commit 87c9faeb4c7a94b2de1b2cf44d8db1383909ccc2
Author: Aaron Durbin 
Date:   Fri Jan 22 15:26:04 2016 -0600

chromeos/vboot: provide support for x86 memory init verification

For x86 systems which resume through the reset vector one needs to
    ensure the the RW slot taken at resume time matches the one at
    boot time. The reason is that any assets pulled out of the boot
    media need to match how the platform previously booted. To do
    that one needs obtain the hash digest of the chosen slot, and it
    needs to be saved in a secure place on the normal boot path. On
    resume one needs to retrieve the hash digest back to compare it
    with the chosen slot. If they don't match resuming won't be
    possible.

BUG=chrome-os-partner:46049
    BRANCH=glados
    TEST=Suspended and resumed on chell. Also, tested with an EC build
         which returns a bad hash to ensure that is properly caught.
    CQ-DEPEND=CL:323460

Change-Id: I90ce26813b67f46913aa4026b42d9490a564bb6c
    Signed-off-by: Patrick Georgi 
    Original-Commit-Id: 01a42c0ecfc6d60d1d2e5e36a86781d91d5c47a9
    Original-Change-Id: I6c6bdce7e06712bc06cc620a3d7a6a6250c59c95
    Original-Signed-off-by: Aaron Durbin 
    Original-Reviewed-on: https://chromium-review.googlesource.com/323500
    Original-Reviewed-by: Patrick Georgi 
    Original-Reviewed-by: Duncan Laurie 
    Reviewed-on: https://review.coreboot.org/13574
    Tested-by: build bot (Jenkins)
    Reviewed-by: Stefan Reinauer

See https://review.coreboot.org/13574 for details.

-gerrit