net: ethernet: ti: cpsw: simplify getting .driver_data

We should get 'driver_data' from 'struct device' directly. Going via
platform_device is an unneeded step back and forth.
Signed-off-by: NWolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/ti/cpsw.c

@@ -3669,8 +3669,7 @@ static int cpsw_remove(struct platform_device *pdev)
 #ifdef CONFIG_PM_SLEEP
 static int cpsw_suspend(struct device *dev)
 {
-	struct platform_device	*pdev = to_platform_device(dev);
-	struct net_device	*ndev = platform_get_drvdata(pdev);
+	struct net_device	*ndev = dev_get_drvdata(dev);
 	struct cpsw_common	*cpsw = ndev_to_cpsw(ndev);
 
 	if (cpsw->data.dual_emac) {
@@ -3693,8 +3692,7 @@ static int cpsw_suspend(struct device *dev)
 
 static int cpsw_resume(struct device *dev)
 {
-	struct platform_device	*pdev = to_platform_device(dev);
-	struct net_device	*ndev = platform_get_drvdata(pdev);
+	struct net_device	*ndev = dev_get_drvdata(dev);
 	struct cpsw_common	*cpsw = ndev_to_cpsw(ndev);
 
 	/* Select default pin state */