hwmon: 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: Guenter Roeck <linux@roeck-us.net>
diff --git a/drivers/hwmon/nct6775.c b/drivers/hwmon/nct6775.c
index 25e2c7b..a0ace07 100644
--- a/drivers/hwmon/nct6775.c
+++ b/drivers/hwmon/nct6775.c
@@ -3285,7 +3285,7 @@
 static int nct6775_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
-	struct nct6775_sio_data *sio_data = dev->platform_data;
+	struct nct6775_sio_data *sio_data = dev_get_platdata(dev);
 	struct nct6775_data *data;
 	struct resource *res;
 	int i, s, err = 0;