Patch merged into coreboot/master: veyron_danger: Update SDMMC power on/off code for v2

the following patch was just integrated into master:
commit 14610ec20ae086570434114fa262a9fb84dae6d9
Author: David Hendricks 
Date:   Wed Jun 3 15:27:07 2015 -0700

veyron_danger: Update SDMMC power on/off code for v2

This re-factors SDMMC power on/off to make corrections and take
    differences between board versions into account. To avoid similar-
    but-different case switch statements in romstage.c and mainboard.c,
    power on/off functions for SDMMC are split into their own .c file.

BUG=none
    BRANCH=none
    TEST=built and booted of micro-SD card on Danger v2

Change-Id: Ib3069c35ceff1ff98b49579a6298681c1390beee
    Signed-off-by: Patrick Georgi 
    Original-Commit-Id: eecfee4a5dd39073b5f966a25991a594b3c4b519
    Original-Change-Id: Id86ae7f40687e843ffc4e7769309d4678ad54f49
    Original-Signed-off-by: David Hendricks 
    Original-Reviewed-on: https://chromium-review.googlesource.com/280853
    Original-Reviewed-by: Julius Werner 
    Reviewed-on: http://review.coreboot.org/10685
    Tested-by: build bot (Jenkins)
    Reviewed-by: Stefan Reinauer

See http://review.coreboot.org/10685 for details.

-gerrit