regulator: 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: Mark Brown <broonie@linaro.org>
diff --git a/drivers/regulator/tps6524x-regulator.c b/drivers/regulator/tps6524x-regulator.c
index 1094393..62e8d28 100644
--- a/drivers/regulator/tps6524x-regulator.c
+++ b/drivers/regulator/tps6524x-regulator.c
@@ -601,7 +601,7 @@
 	struct regulator_config config = { };
 	int ret = 0, i;
 
-	init_data = dev->platform_data;
+	init_data = dev_get_platdata(dev);
 	if (!init_data) {
 		dev_err(dev, "could not find regulator platform data\n");
 		return -EINVAL;