Merge "KeyMint HALs: clarifications" am: 46f99f4e9a am: ee63e2489a am: 5ad931e0a6 am: 8e99dca617

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/1846278

Change-Id: Icb124f6909ae3eec56f636208aa523031cb762ee
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>