Merge "String update for rear display mode" into tm-qpr-dev am: f8de84e2 am: a4364f3b

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21337648



Change-Id: I60c98acd5811fe83b6fc80b28abf59c34cc3d878
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>