net: phy: mdio-mux-bcm-iproc: 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: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/phy/mdio-mux-bcm-iproc.c

@@ -289,8 +289,7 @@ static int mdio_mux_iproc_remove(struct platform_device *pdev)
 #ifdef CONFIG_PM_SLEEP
 static int mdio_mux_iproc_suspend(struct device *dev)
 {
-	struct platform_device *pdev = to_platform_device(dev);
-	struct iproc_mdiomux_desc *md = platform_get_drvdata(pdev);
+	struct iproc_mdiomux_desc *md = dev_get_drvdata(dev);
 
 	clk_disable_unprepare(md->core_clk);
 
@@ -299,8 +298,7 @@ static int mdio_mux_iproc_suspend(struct device *dev)
 
 static int mdio_mux_iproc_resume(struct device *dev)
 {
-	struct platform_device *pdev = to_platform_device(dev);
-	struct iproc_mdiomux_desc *md = platform_get_drvdata(pdev);
+	struct iproc_mdiomux_desc *md = dev_get_drvdata(dev);
 
 	clk_prepare_enable(md->core_clk);
 	mdio_mux_iproc_config(md);