leds: use platform_{get,set}_drvdata()

Use the wrapper functions for getting and setting the driver data using
platform_device instead of using dev_{get,set}_drvdata() with &pdev->dev,
so we can directly pass a struct platform_device.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
diff --git a/drivers/leds/leds-wm831x-status.c b/drivers/leds/leds-wm831x-status.c
index 6bd5c67..120815a 100644
--- a/drivers/leds/leds-wm831x-status.c
+++ b/drivers/leds/leds-wm831x-status.c
@@ -241,7 +241,7 @@
 			       GFP_KERNEL);
 	if (!drvdata)
 		return -ENOMEM;
-	dev_set_drvdata(&pdev->dev, drvdata);
+	platform_set_drvdata(pdev, drvdata);
 
 	drvdata->wm831x = wm831x;
 	drvdata->reg = res->start;