Merge "Add seat backrest properties to the emulator for CTS tests" into tm-qpr-dev am: 0c1b3401

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/interfaces/+/19442108



Change-Id: Ib01d71c0f1f0578fc66403414d6aa64af8418f39
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>