mtd: maps: 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: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
diff --git a/drivers/mtd/maps/pxa2xx-flash.c b/drivers/mtd/maps/pxa2xx-flash.c
index 22c55cb..d210d13 100644
--- a/drivers/mtd/maps/pxa2xx-flash.c
+++ b/drivers/mtd/maps/pxa2xx-flash.c
@@ -49,7 +49,7 @@
 
 static int pxa2xx_flash_probe(struct platform_device *pdev)
 {
-	struct flash_platform_data *flash = pdev->dev.platform_data;
+	struct flash_platform_data *flash = dev_get_platdata(&pdev->dev);
 	struct pxa2xx_flash_info *info;
 	struct resource *res;