input: sh_keysc suspend can use to_platform_device()

This patch changes sh_keysc to use to_platform_device()
for suspend. Thanks to Trilok Soni for this suggestion.
Signed-off-by: NMagnus Damm <damm@igel.co.jp>
Reviewed-by: NTrilok Soni <soni.trilok@gmail.com>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

drivers/input/keyboard/sh_keysc.c

@@ -257,13 +257,10 @@ static int __devexit sh_keysc_remove(struct platform_device *pdev)
 
 static int sh_keysc_suspend(struct device *dev)
 {
-	struct platform_device *pdev;
-	struct sh_keysc_priv *priv;
+	struct platform_device *pdev = to_platform_device(dev);
+	struct sh_keysc_priv *priv = platform_get_drvdata(pdev);
 	unsigned short value;
 
-	pdev = container_of(dev, struct platform_device, dev);
-	priv = platform_get_drvdata(pdev);
-
 	value = ioread16(priv->iomem_base + KYCR1_OFFS);
 
 	if (device_may_wakeup(dev))