Patch merged into coreboot/master: soc/intel/apollolake: Add save/restore variable MRC cache

the following patch was just integrated into master:
commit 96e9ff168ca52f3bb06606b65fb07ba5e4e7bb50
Author: Andrey Petrov 
Date:   Fri Nov 4 16:18:30 2016 -0700

soc/intel/apollolake: Add save/restore variable MRC cache

Apollolake MRC cache is divided into two regions: constant and variable.
    Currently they are clubbed together. Since variable data changes across
    cold reboot it triggers invalidation of the whole cache region. This
    change declubs the data, adds routines to load/store variable data on
    flash.

BUG=chrome-os-partner:57515
    TEST=with patch series applied: cold reboot, make sure MRC is not
    updated. Do S3 suspend/resume cycle.

Change-Id: I374519777abe9b9a1e6cceae5318decd405bb527
    Signed-off-by: Andrey Petrov 
    Reviewed-on: https://review.coreboot.org/17237
    Tested-by: build bot (Jenkins)
    Reviewed-by: Aaron Durbin

See https://review.coreboot.org/17237 for details.

-gerrit