Modified frequency changed event to framework am: 65a724befe

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

Change-Id: I776fc473193c29cd4568a9253d5878a3b622116e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>