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/menelaus.c b/drivers/mfd/menelaus.c
index 998ce8c..9b72a44 100644
--- a/drivers/mfd/menelaus.c
+++ b/drivers/mfd/menelaus.c
@@ -1189,7 +1189,7 @@
 	int			rev = 0, val;
 	int			err = 0;
 	struct menelaus_platform_data *menelaus_pdata =
-					client->dev.platform_data;
+					dev_get_platdata(&client->dev);
 
 	if (the_menelaus) {
 		dev_dbg(&client->dev, "only one %s for now\n",