Merge "Add API to query mmap policy information." am: c3a910776f

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2388416

Change-Id: If63fe3c18a99ef92bd4ad53d0f7471b1e9768e08
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>