UPSTREAM: soc/mediatek/mt8192: add SPM firmware

Support SPM suspend at the end of system suspend.

BUG=b:159079649,b:173653085
TEST=Asurada boots up to shell

Original-Change-Id: I7dfa4a8a7ac585dcc8eb158d2db5a2a89436389d
Signed-off-by: Roger Lu <roger.lu@mediatek.com>
Change-Id: I8767a269dd42b65aeb5ffaa57e1ab7d57a685036
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/coreboot/blobs/+/2742336
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-by: Yu-Ping Wu <yupingso@chromium.org>
Tested-by: Hung-Te Lin <hungte@chromium.org>
Commit-Queue: Yu-Ping Wu <yupingso@chromium.org>
Commit-Queue: Hung-Te Lin <hungte@chromium.org>
Auto-Submit: Hung-Te Lin <hungte@chromium.org>
4 files changed