gpio: gpio-mxc: 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-mxc.c

@@ -552,8 +552,7 @@ static void mxc_gpio_restore_regs(struct mxc_gpio_port *port)
 
 static int __maybe_unused mxc_gpio_noirq_suspend(struct device *dev)
 {
-	struct platform_device *pdev = to_platform_device(dev);
-	struct mxc_gpio_port *port = platform_get_drvdata(pdev);
+	struct mxc_gpio_port *port = dev_get_drvdata(dev);
 
 	mxc_gpio_save_regs(port);
 	clk_disable_unprepare(port->clk);
@@ -563,8 +562,7 @@ static int __maybe_unused mxc_gpio_noirq_suspend(struct device *dev)
 
 static int __maybe_unused mxc_gpio_noirq_resume(struct device *dev)
 {
-	struct platform_device *pdev = to_platform_device(dev);
-	struct mxc_gpio_port *port = platform_get_drvdata(pdev);
+	struct mxc_gpio_port *port = dev_get_drvdata(dev);
 	int ret;
 
 	ret = clk_prepare_enable(port->clk);