[coreboot-gerrit] Patch merged into coreboot/master: 35dc00f broadwell: Preserve VbNv around cmos_init

the following patch was just integrated into master:
commit 35dc00f75b3345fda78df56fe29495eb5fdf5827
Author: Duncan Laurie 
Date:   Sun Jan 18 14:06:42 2015 -0800

broadwell: Preserve VbNv around cmos_init

To ensure that boot flags (legacy, usb, signed-only) are
    properly restored from CMOS and used in the first boot after
    a battery removal or RTC reset then the VbNv region needs to
    be preserved around the cmos_init call.

When using vboot firmware selection and VbNv is stored in CMOS
    then that region of CMOS will have been re-initialized by the
    time we call cmos_init and reset CMOS if the chipset flag was
    set indicating a problem.

BUG=chrome-os-partner:35240
    BRANCH=broadwell
    TEST=manual testing on samus:
    1) boot in dev mode, enable dev_boot_legacy and ensure it works
    2) on EC console pulse PCH_RTCRST_L low for a second
    3) ensure first boot after RTC reset will still boot legacy mode
    4) remove battery for a time
    5) ensure first boot after battery is re-inserted will still
    boot legacy mode

Change-Id: Ica256bbdcba6d4616957ff38e63914dd15f645c6
    Signed-off-by: Stefan Reinauer 
    Original-Commit-Id: 881c7841c95dec392a66eef38a7112c1f385fdfa
    Original-Change-Id: I4c33f183ba4b301d68ae31c41fc6663f3be857b0
    Original-Signed-off-by: Duncan Laurie 
    Original-Reviewed-on: https://chromium-review.googlesource.com/241529
    Original-Reviewed-by: Aaron Durbin 
    Reviewed-on: http://review.coreboot.org/9495
    Tested-by: build bot (Jenkins)
    Reviewed-by: Patrick Georgi

See http://review.coreboot.org/9495 for details.

-gerrit