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/omap1_bl.c b/drivers/video/backlight/omap1_bl.c
index 812e22e..ac11a46 100644
--- a/drivers/video/backlight/omap1_bl.c
+++ b/drivers/video/backlight/omap1_bl.c
@@ -133,7 +133,7 @@
 	struct backlight_properties props;
 	struct backlight_device *dev;
 	struct omap_backlight *bl;
-	struct omap_backlight_config *pdata = pdev->dev.platform_data;
+	struct omap_backlight_config *pdata = dev_get_platdata(&pdev->dev);
 
 	if (!pdata)
 		return -ENXIO;