Kindred: Add eMMC boot support

Add eMMC boot support for cometlake SOC.

BUG=b:135464155
BRANCH=none
TEST=Boot kindred onboard eMMC.

Change-Id: I60f3f4389c5c7d46c6d54ab053b777272f474a78
Signed-off-by: David Wu <david_wu@quanta.corp-partner.google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/depthcharge/+/1666982
Reviewed-by: Paul Fagerburg <pfagerburg@chromium.org>
1 file changed