Represent NAN callback events as a bitmap am: 3f7bfd2dc5 am: 6b039c37e5 am: 43eead8e5b am: 9c6da55dfa

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/interfaces/+/24029040

Change-Id: Ice82ddbaf3263fd1aae8c3e025b843cf1fdba8dc
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>