Blind scan should be an optional feature based on the design document am: 58be11ec am: 8ef6a817

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2890674



Change-Id: I87a120394521e0f878be88d1ee5a3d8d837db99f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>