Merge "Implement basic Fingerprint functionality." into udc-qpr-dev am: 1412f391 am: 22b67802

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Settings/+/23480676



Change-Id: I981accee2b7f0f3742c98d1b352d3076d421dede
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>