Patch merged into coreboot/master: mediatek/mt8173: Add mt6311 driver

the following patch was just integrated into master:
commit 7c54d2a760c278412c0b2002ddcb555413f96231
Author: henryc.chen 
Date:   Wed Mar 2 15:49:52 2016 +0800

mediatek/mt8173: Add mt6311 driver

Add secondary PMIC for external buck control on Oak rev3/4

BRANCH=none
    BUG=none
    TEST=verified on Oak rev4/rev5

Change-Id: I24c18a1cf71fc57deacedcbeb6a100b131c28077
    Signed-off-by: Patrick Georgi 
    Original-Commit-Id: 7f7f8ceac795d8193194a6918a73c4b391009025
    Original-Change-Id: I312d8281d2c09d8bc43f092edef3e405d51ee7d0
    Original-Signed-off-by: henryc.chen 
    Original-Reviewed-on: https://chromium-review.googlesource.com/332341
    Original-Commit-Ready: Yidi Lin 
    Original-Tested-by: Yidi Lin 
    Original-Reviewed-by: Julius Werner 
    Reviewed-on: https://review.coreboot.org/14121
    Tested-by: build bot (Jenkins)
    Reviewed-by: Stefan Reinauer

See https://review.coreboot.org/14121 for details.

-gerrit