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/virtual.c b/drivers/regulator/virtual.c
index a9d4284..f53e78b 100644
--- a/drivers/regulator/virtual.c
+++ b/drivers/regulator/virtual.c
@@ -287,7 +287,7 @@
 
 static int regulator_virtual_probe(struct platform_device *pdev)
 {
-	char *reg_id = pdev->dev.platform_data;
+	char *reg_id = dev_get_platdata(&pdev->dev);
 	struct virtual_consumer_data *drvdata;
 	int ret;