Merge "Add a README for Remote Key Provisioning." am: ddc1e4c82d

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2127652

Change-Id: I2cf92fc7d589e434e89a04c7bb5f80e64eedbbc7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>