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/pcap-regulator.c b/drivers/regulator/pcap-regulator.c
index 1a73a29..b49eaee 100644
--- a/drivers/regulator/pcap-regulator.c
+++ b/drivers/regulator/pcap-regulator.c
@@ -243,7 +243,7 @@
 	struct regulator_config config = { };
 
 	config.dev = &pdev->dev;
-	config.init_data = pdev->dev.platform_data;
+	config.init_data = dev_get_platdata(&pdev->dev);
 	config.driver_data = pcap;
 
 	rdev = regulator_register(&pcap_regulators[pdev->id], &config);