can: at91_can: 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: Marc Kleine-Budde <mkl@pengutronix.de>
diff --git a/drivers/net/can/at91_can.c b/drivers/net/can/at91_can.c
index 3b1ff61..64f2efa 100644
--- a/drivers/net/can/at91_can.c
+++ b/drivers/net/can/at91_can.c
@@ -1347,7 +1347,7 @@
 	priv->reg_base = addr;
 	priv->devtype_data = *devtype_data;
 	priv->clk = clk;
-	priv->pdata = pdev->dev.platform_data;
+	priv->pdata = dev_get_platdata(&pdev->dev);
 	priv->mb0_id = 0x7ff;
 
 	netif_napi_add(dev, &priv->napi, at91_poll, get_mb_rx_num(priv));