Modified frequency changed event to framework am: 65a724befe am: 01acae4848

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

Change-Id: I9c77077bdad6f2b49be87108c75b6d9656ac6c76
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>