Merge "Notify dispatcher when its configuration needs to be updated" into udc-dev am: 8db57bf911 am: ada2a8fc5a

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/22761147

Change-Id: Ia628a31787e250de67d6dd941e432443b3503453
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>