Satellite demo mode : Simulated sending and receiving am: b6c01756 am: 3ea8fa37 am: 02d6f938

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/opt/telephony/+/22840005



Change-Id: I266a53c467ec88821f1bb11358821babdc74f4c8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>