Merge "limit TelecomManager#registerPhoneAccount to 10; api doc update" into...

Merge "limit TelecomManager#registerPhoneAccount to 10; api doc update" into qt-dev am: 08f8988b am: 8193edd1 am: 74f9b7f4

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/16908080



Change-Id: I9264ab8f95bec38b438024cc7a65a6b6b720e6fd
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>