wpa_supplicant: Fix channel switch notification with VHT

Fix a bug in wpas_ap_ch_switch() function, which didn't pass VHT
frequencies correctly to hostapd_event_ch_switch().

Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>

wpa_supplicant/ap.c

@@ -1207,7 +1207,8 @@ void wpas_ap_ch_switch(struct wpa_supplicant *wpa_s, int freq, int ht,
 	wpa_s->assoc_freq = freq;
 	if (wpa_s->current_ssid)
 		wpa_s->current_ssid->frequency = freq;
-	hostapd_event_ch_switch(wpa_s->ap_iface->bss[0], freq, ht, offset, width, cf1, cf1);
+	hostapd_event_ch_switch(wpa_s->ap_iface->bss[0], freq, ht,
+				offset, width, cf1, cf2);
 }