net: wwan: mhi_wwan_ctrl: Add DUN2 to have a secondary AT port

In order to have a secondary AT port add "DUN2".
Signed-off-by: Fabio Porcedda <fabio.porcedda@gmail.com>
Reviewed-by: Loic Poulain <loic.poulain@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/wwan/mhi_wwan_ctrl.c

@@ -258,6 +258,7 @@ static void mhi_wwan_ctrl_remove(struct mhi_device *mhi_dev)
 
 static const struct mhi_device_id mhi_wwan_ctrl_match_table[] = {
 	{ .chan = "DUN", .driver_data = WWAN_PORT_AT },
+	{ .chan = "DUN2", .driver_data = WWAN_PORT_AT },
 	{ .chan = "MBIM", .driver_data = WWAN_PORT_MBIM },
 	{ .chan = "QMI", .driver_data = WWAN_PORT_QMI },
 	{ .chan = "DIAG", .driver_data = WWAN_PORT_QCDM },