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>

drivers/mfd/max8997.c

@@ -188,7 +188,7 @@ static int max8997_i2c_probe(struct i2c_client *i2c,
 			    const struct i2c_device_id *id)
 {
 	struct max8997_dev *max8997;
-	struct max8997_platform_data *pdata = i2c->dev.platform_data;
+	struct max8997_platform_data *pdata = dev_get_platdata(&i2c->dev);
 	int ret = 0;
 
 	max8997 = kzalloc(sizeof(struct max8997_dev), GFP_KERNEL);