Merge "Add documentation for added 5G RAT capabilities" am: f03b626e85 am: 1f869bf777 am: b59284ac66 am: 96d7612c75

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1375558

Change-Id: I3ea99e7554e343977eef1d33024aa4635ffedda4