Merge "Telephony method for ecall diagnostic data" into udc-dev am: 94790d99 am: b501ef8f

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21834598



Change-Id: Ie7e3ea36b940e363989c5f7261a72f51c6b71351
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>