Merge "sysui: Have date/weather flag as sysprop flag." into tm-qpr-dev am: f978dfde

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/20965586



Change-Id: I86d8ed505473195261f7f4595e689ebabcd6f8eb
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>