Modified frequency changed event to framework am: 65a724befe am: 01acae4848 am: 69917f9512 am: 7a2d3187ae

Original change: https://googleplex-android-review.googlesource.com/c/platform/external/wpa_supplicant_8/+/18583204

Change-Id: Ie45e401357eb049a904fc470be1b627a54ced8b7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>