Secretkeeper implementation: in-HAL/nonsecure impl am: eb223ba883 am: 76e967125d

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

Change-Id: Ia67a9179ec0dcb7e3982e0f785703cac615d723a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>