Modified frequency changed event to framework am: 65a724befe am: c36b8e676f am: 8fc512fa81 am: b95da5dde6

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

Change-Id: I0a1c473d282eb09f0d5f192caa2e94c14a10a2e3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>