Patch merged into coreboot/master: ec/google/chromeec: let platform prepare for reboot when resetting EC

the following patch was just integrated into master:
commit 96a4317fa9543a0d07e34bae3d40da810554411f
Author: Aaron Durbin 
Date:   Mon Feb 6 10:08:45 2017 -0600

ec/google/chromeec: let platform prepare for reboot when resetting EC

This fixes an issue on systems where the S3 state in the pm1 control
    registers are not cleared when vboot determines recovery mode is
    required on an S3 resume. The EC code will reboot the system knowing
    that the EC was in RW. However, on subsequent entry into romstage the
    S3 path will be taken and fails to recover cbmem -- forcing another
    reboot. To work around that, signal to the platform a reboot is
    happening and let the platform perform the necessary fix ups to the
    register state.

BUG=chrome-os-partner:62627

Change-Id: Ic144b11b4968c92a1273b8d9eb9dc10f0056bf3d
    Signed-off-by: Aaron Durbin 
    Reviewed-on: https://review.coreboot.org/18295
    Tested-by: build bot (Jenkins)
    Reviewed-by: Duncan Laurie

See https://review.coreboot.org/18295 for details.

-gerrit