Patch merged into coreboot/master: skylake: fix VSDIO is at 0.8V when SDCard is not inserted

the following patch was just integrated into master:
commit ce37e47f46e52090529a91a45d1c914d159643c8
Author: Zhuo-hao.Lee 
Date:   Wed Jul 27 13:18:22 2016 +0800

skylake: fix VSDIO is at 0.8V when SDCard is not inserted

1. Enable SoC SD_CMD/D* signals pull-down of 20k when SD-card
       is removed. When SD-card is disconnected, the pull-down is
       disabled.
    2. Provide path for weak leakage from buffers of SD_CMD/D* signal
       to be grounded. Thus dropping voltage on the SD_CMD/D* signals to ~0V.

BUG=chrome-os-partner:54421
    TEST=no power leakage when SDCard isn't inserted on skylake platform

Change-Id: I567199b172841125f8916a61a76005cfdaa62eb8
    Signed-off-by: Zhuo-hao.Lee 
    Reviewed-on: https://review.coreboot.org/15910
    Tested-by: build bot (Jenkins)
    Reviewed-by: Paul Menzel 
    Reviewed-by: Duncan Laurie

See https://review.coreboot.org/15910 for details.

-gerrit