leds: 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: Bryan Wu <cooloney@gmail.com>
diff --git a/drivers/leds/leds-pwm.c b/drivers/leds/leds-pwm.c
index faf52c0..bb6f948 100644
--- a/drivers/leds/leds-pwm.c
+++ b/drivers/leds/leds-pwm.c
@@ -147,7 +147,7 @@
 
 static int led_pwm_probe(struct platform_device *pdev)
 {
-	struct led_pwm_platform_data *pdata = pdev->dev.platform_data;
+	struct led_pwm_platform_data *pdata = dev_get_platdata(&pdev->dev);
 	struct led_pwm_priv *priv;
 	int i, ret = 0;