mfd: wl1273-core: Use devm_mfd_add_devices() for mfd_device registration

Use devm_mfd_add_devices() for MFD devices registration and get
rid of .remove callback to remove MFD child-devices. This is done
by managed device framework.
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

drivers/mfd/wl1273-core.c

@@ -170,15 +170,6 @@ static int wl1273_fm_set_volume(struct wl1273_core *core, unsigned int volume)
 	return 0;
 }
 
-static int wl1273_core_remove(struct i2c_client *client)
-{
-	dev_dbg(&client->dev, "%s\n", __func__);
-
-	mfd_remove_devices(&client->dev);
-
-	return 0;
-}
-
 static int wl1273_core_probe(struct i2c_client *client,
 				       const struct i2c_device_id *id)
 {
@@ -237,8 +228,8 @@ static int wl1273_core_probe(struct i2c_client *client,
 	dev_dbg(&client->dev, "%s: number of children: %d.\n",
 		__func__, children);
 
-	r = mfd_add_devices(&client->dev, -1, core->cells,
-			    children, NULL, 0, NULL);
+	r = devm_mfd_add_devices(&client->dev, -1, core->cells,
+				 children, NULL, 0, NULL);
 	if (r)
 		goto err;
 
@@ -258,7 +249,6 @@ static struct i2c_driver wl1273_core_driver = {
 	},
 	.probe = wl1273_core_probe,
 	.id_table = wl1273_driver_id_table,
-	.remove = wl1273_core_remove,
 };
 
 static int __init wl1273_core_init(void)