Merge "Clarify REMOTE disconnect cause API docs." into udc-dev am: 5bfe44b049 am: 0f736713e6

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22977774

Change-Id: I2717064910726afcb5f156078e36b54cef45618f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>