Implement alternate SE root-of-trust provisioning. am: f9a58ae4ff am: 91cf66e2fc

Original change: https://android-review.googlesource.com/c/platform/system/keymaster/+/2109825

Change-Id: Ieb25a5fdb9981f547e87e0379824c527a3ee7662
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>