mfd: menf21bmc: 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>
Reviewed-by: Andreas Werner <andreas.werner@men.de>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

drivers/mfd/menf21bmc.c

@@ -96,7 +96,7 @@ menf21bmc_probe(struct i2c_client *client, const struct i2c_device_id *ids)
 		return ret;
 	}
 
-	ret = mfd_add_devices(&client->dev, 0, menf21bmc_cell,
+	ret = devm_mfd_add_devices(&client->dev, 0, menf21bmc_cell,
 				   ARRAY_SIZE(menf21bmc_cell), NULL, 0, NULL);
 	if (ret < 0) {
 		dev_err(&client->dev, "failed to add BMC sub-devices\n");
@@ -106,12 +106,6 @@ menf21bmc_probe(struct i2c_client *client, const struct i2c_device_id *ids)
 	return 0;
 }
 
-static int menf21bmc_remove(struct i2c_client *client)
-{
-	mfd_remove_devices(&client->dev);
-	return 0;
-}
-
 static const struct i2c_device_id menf21bmc_id_table[] = {
 	{ "menf21bmc" },
 	{ }
@@ -122,7 +116,6 @@ static struct i2c_driver menf21bmc_driver = {
 	.driver.name	= "menf21bmc",
 	.id_table	= menf21bmc_id_table,
 	.probe		= menf21bmc_probe,
-	.remove		= menf21bmc_remove,
 };
 
 module_i2c_driver(menf21bmc_driver);