Secretkeeper implementation: in-HAL/nonsecure impl am: eb223ba883 am: afca7e50dc

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2797756

Change-Id: I1fef4d116ebb35d5ee1cdc4b8dcc857dcf7480c0
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>