Patch merged into coreboot/master: google/oak: Enable TP_SHIFT_EN for the revisons before 5 only

the following patch was just integrated into master:
commit cd6aac15242d8a74a90f789c108b331a41b2aa6f
Author: Yidi Lin 
Date:   Mon Dec 28 17:22:33 2015 +0800

google/oak: Enable TP_SHIFT_EN for the revisons before 5 only

BRANCH=none
    BUG=none
    TEST=emerge coreboot

Change-Id: Ic46490a56a6a8146b91a055b9ce5d5bb23bc7a49
    Signed-off-by: Patrick Georgi 
    Original-Commit-Id: 082ce1848bf37bba369fd0dccc4cf3fc83a8a018
    Original-Change-Id: I58f009d2fc03cf5a52b4dbd042a92973cde4d035
    Original-Signed-off-by: Yidi Lin 
    Original-Reviewed-on: https://chromium-review.googlesource.com/320029
    Original-Reviewed-by: Julius Werner 
    Reviewed-on: https://review.coreboot.org/13973
    Tested-by: build bot (Jenkins)
    Reviewed-by: Stefan Reinauer

See https://review.coreboot.org/13973 for details.

-gerrit