backlight: use dev_get_platdata()

Use the wrapper function for retrieving the platform data instead of
accessing dev->platform_data directly.  This is a cosmetic change to
make the code simpler and enhance the readability.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/video/backlight/kb3886_bl.c b/drivers/video/backlight/kb3886_bl.c
index bca6ccc..5bacabb 100644
--- a/drivers/video/backlight/kb3886_bl.c
+++ b/drivers/video/backlight/kb3886_bl.c
@@ -141,7 +141,7 @@
 static int kb3886bl_probe(struct platform_device *pdev)
 {
 	struct backlight_properties props;
-	struct kb3886bl_machinfo *machinfo = pdev->dev.platform_data;
+	struct kb3886bl_machinfo *machinfo = dev_get_platdata(&pdev->dev);
 
 	bl_machinfo = machinfo;
 	if (!machinfo->limit_mask)