mfd: Use dev_get_platdata()

Use the wrapper function for retrieving the platform data instead of
accessing dev->platform_data directly.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
diff --git a/drivers/mfd/max8925-i2c.c b/drivers/mfd/max8925-i2c.c
index 8042b32..de7fb80 100644
--- a/drivers/mfd/max8925-i2c.c
+++ b/drivers/mfd/max8925-i2c.c
@@ -151,7 +151,7 @@
 static int max8925_probe(struct i2c_client *client,
 				   const struct i2c_device_id *id)
 {
-	struct max8925_platform_data *pdata = client->dev.platform_data;
+	struct max8925_platform_data *pdata = dev_get_platdata(&client->dev);
 	static struct max8925_chip *chip;
 	struct device_node *node = client->dev.of_node;