Send frequency changed event to framework

When supplicant receives the channel change event
(NL80211_CMD_CH_SWITCH_NOTIFY) from driver, send
the new operating frequency information to framework.

Bug: 202758240
Test: Manually triggered channel switch through hostapd command
    and verified the new frequency in p2p group info logs
Change-Id: I05f10077ac497b934eb2c0560e179cdf4ed1497f
diff --git a/wpa_supplicant/aidl/aidl.h b/wpa_supplicant/aidl/aidl.h
index 899f99cd..8d2807d 100644
--- a/wpa_supplicant/aidl/aidl.h
+++ b/wpa_supplicant/aidl/aidl.h
@@ -126,6 +126,7 @@
 	void wpas_aidl_notify_transition_disable(
 		struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid, u8 bitmap);
 	void wpas_aidl_notify_network_not_found(struct wpa_supplicant *wpa_s);
+	void wpas_aidl_notify_bss_freq_changed(struct wpa_supplicant *wpa_s);
 #else   // CONFIG_CTRL_IFACE_AIDL
 static inline int wpas_aidl_register_interface(struct wpa_supplicant *wpa_s)
 {
@@ -277,6 +278,8 @@
 {}
 static void wpas_aidl_notify_network_not_found(struct wpa_supplicant *wpa_s)
 {}
+void wpas_aidl_notify_bss_freq_changed(struct wpa_supplicant *wpa_s)
+{}
 #endif  // CONFIG_CTRL_IFACE_AIDL
 
 #ifdef _cplusplus