Merge "Update docs for TelephonyManager#getServiceState" am: 66917569e1 am: a29952e222 am: 44435a2175 am: 2e35b030eb

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

Change-Id: Iea46fba41e04967561c49c250db8b9a822b304fd