net: bcm63xx_enet: 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: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/broadcom/bcm63xx_enet.c

@@ -1798,7 +1798,7 @@ static int bcm_enet_probe(struct platform_device *pdev)
 	priv->rx_ring_size = BCMENET_DEF_RX_DESC;
 	priv->tx_ring_size = BCMENET_DEF_TX_DESC;
 
-	pd = pdev->dev.platform_data;
+	pd = dev_get_platdata(&pdev->dev);
 	if (pd) {
 		memcpy(dev->dev_addr, pd->mac_addr, ETH_ALEN);
 		priv->has_phy = pd->has_phy;
@@ -1962,7 +1962,7 @@ static int bcm_enet_remove(struct platform_device *pdev)
 	} else {
 		struct bcm63xx_enet_platform_data *pd;
 
-		pd = pdev->dev.platform_data;
+		pd = dev_get_platdata(&pdev->dev);
 		if (pd && pd->mii_config)
 			pd->mii_config(dev, 0, bcm_enet_mdio_read_mii,
 				       bcm_enet_mdio_write_mii);
@@ -2740,7 +2740,7 @@ static int bcm_enetsw_probe(struct platform_device *pdev)
 	priv->tx_ring_size = BCMENET_DEF_TX_DESC;
 	priv->dma_maxburst = BCMENETSW_DMA_MAXBURST;
 
-	pd = pdev->dev.platform_data;
+	pd = dev_get_platdata(&pdev->dev);
 	if (pd) {
 		memcpy(dev->dev_addr, pd->mac_addr, ETH_ALEN);
 		memcpy(priv->used_ports, pd->used_ports,