disk_updater: Use ffu_old mmc command for existing eMMC upgrade
4.4 has moved to a user-space eMMC FW upgrade mode.
As previous eMMC mode has been renamed ffu_old, use it.
BUG=b:110793849
CQ-DEPEND=CL:1114437
TEST=Unit test.
Change-Id: I43c3c447e7184d25ea83c5cdd9fe05e484b82836
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1114458
Reviewed-by: Julius Werner <jwerner@chromium.org>
(cherry picked from commit b124ef6e0b67e6418b723a53e7b24b4dc8d35d4a)
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1134666
Reviewed-by: Wei-Han Chen <stimim@chromium.org>
3 files changed
