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 am: 6b36ce68

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



Change-Id: Ifc65d6af6a1623ab2c4d6d25629ebad376cb5728
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>