Secretkeeper implementation: in-HAL/nonsecure impl am: eb223ba883 am: afca7e50dc am: 28877b085b

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

Change-Id: I3f7e17bf6ee1dae2f9874c154c74a0bbf3341943
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>