hostap: only add STA interface when hostapd enabled

For add_interface(), only add STA interface when hostapd enabled,
and the Soft-AP interface will be added in zephyr_hostapd_init().

Signed-off-by: Maochen Wang <maochen.wang@nxp.com>

modules/hostap/src/supp_main.c

@@ -507,6 +507,12 @@ static void iface_cb(struct net_if *iface, void *user_data)
 		return;
 	}
 
+#ifdef CONFIG_WIFI_NM_HOSTAPD_AP
+	if (wifi_nm_iface_is_sap(iface)) {
+		return;
+	}
+#endif
+
 	if (!net_if_is_admin_up(iface)) {
 		return;
 	}