HID: sensors: fix up for mfd_add_devices() API change

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
diff --git a/drivers/hid/hid-sensor-hub.c b/drivers/hid/hid-sensor-hub.c
index 34a35ba..4ac759c 100644
--- a/drivers/hid/hid-sensor-hub.c
+++ b/drivers/hid/hid-sensor-hub.c
@@ -596,7 +596,7 @@
 		}
 	}
 	ret = mfd_add_devices(&hdev->dev, 0, sd->hid_sensor_hub_client_devs,
-		sd->hid_sensor_client_cnt, NULL, 0);
+		sd->hid_sensor_client_cnt, NULL, 0, NULL);
 	if (ret < 0)
 		goto err_free_names;