rambi: Make eMMC CLK pull-down and change eMMC pull strengths to 20K

eMMC CLK was incorrectly configured as PULL_UP, but should have been
PULL_DOWN. 2K pulls somehow masked this problem.

BUG=chrome-os-partner:24353
TEST=Verify eMMC is bootable on Rambi on boards that previously failed
with an all-20K, all-PU eMMC pin configuration.
BRANCH=None

Change-Id: I0cbb6ebbb6818f83402b99330728266b09a0f5d6
Signed-off-by: Shawn Nematbakhsh <shawnn@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/181034
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
1 file changed