[mmc] Add Field Firmware Upgrade command
Add ffu command for updating eMMC firmware.
The kernel must have support for 2 new ioctls:
MMC_FFU_DOWNLOAD_OP and MMC_FFU_INSTALL_OP.
TEST=Upgrading Hynix eMMC on gnawty
BUG=None
Change-Id: I10b846a56f80b72775da94365c3269571dfa632f
Reviewed-on: https://chromium-review.googlesource.com/206888
Reviewed-by: Puthikorn Voravootivat <puthik@chromium.org>
Commit-Queue: Gwendal Grignou <gwendal@chromium.org>
Tested-by: Gwendal Grignou <gwendal@chromium.org>
4 files changed
