Send "TERMINATING" event from hostapd

hostapd didn't send "TERMINATING" event when stopped by
SIGTERM. Android handles this event to stop monitor thread.

This commit adds "TERMINATING" event same as with wpa_supplicant.

Signed-off-by: Tomoharu Hatano <tomoharu.hatano@sonymobile.com>

src/ap/hostapd.c

@@ -357,8 +357,10 @@ static void hostapd_cleanup(struct hostapd_data *hapd)
 	wpa_printf(MSG_DEBUG, "%s(hapd=%p (%s))", __func__, hapd,
 		   hapd->conf->iface);
 	if (hapd->iface->interfaces &&
-	    hapd->iface->interfaces->ctrl_iface_deinit)
+	    hapd->iface->interfaces->ctrl_iface_deinit) {
+		wpa_msg(hapd->msg_ctx, MSG_INFO, WPA_EVENT_TERMINATING);
 		hapd->iface->interfaces->ctrl_iface_deinit(hapd);
+	}
 	hostapd_free_hapd_data(hapd);
 }