Merge "Update docs for TelephonyManager#getServiceState" am: 66917569e1 am: a29952e222 am: 44435a2175

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1474964

Change-Id: I4e502a4d3ea07940c13346b55802151d0efb349c