gpio: gpio-dwapb: 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>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/gpio/gpio-dwapb.c

@@ -748,8 +748,7 @@ static int dwapb_gpio_remove(struct platform_device *pdev)
 #ifdef CONFIG_PM_SLEEP
 static int dwapb_gpio_suspend(struct device *dev)
 {
-	struct platform_device *pdev = to_platform_device(dev);
-	struct dwapb_gpio *gpio = platform_get_drvdata(pdev);
+	struct dwapb_gpio *gpio = dev_get_drvdata(dev);
 	struct gpio_chip *gc	= &gpio->ports[0].gc;
 	unsigned long flags;
 	int i;
@@ -793,8 +792,7 @@ static int dwapb_gpio_suspend(struct device *dev)
 
 static int dwapb_gpio_resume(struct device *dev)
 {
-	struct platform_device *pdev = to_platform_device(dev);
-	struct dwapb_gpio *gpio = platform_get_drvdata(pdev);
+	struct dwapb_gpio *gpio = dev_get_drvdata(dev);
 	struct gpio_chip *gc	= &gpio->ports[0].gc;
 	unsigned long flags;
 	int i;