[media] ir-hix5hd2: Fix build warning

Building for avr32 leads the following build warning:

drivers/media/rc/ir-hix5hd2.c:221: warning: passing argument 1 of 'IS_ERR' discards qualifiers from pointer target type
drivers/media/rc/ir-hix5hd2.c:222: warning: passing argument 1 of 'PTR_ERR' discards qualifiers from pointer target type

devm_ioremap_resource() returns void __iomem *, so change 'base' definition
accordingly.

Reported-by: kbuild test robot <[e-mail]>
Signed-off-by: Fabio Estevam <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/media/rc/ir-hix5hd2.c

···
 
 struct hix5hd2_ir_priv {
 	int			irq;
-	void volatile __iomem	*base;
+	void __iomem		*base;
 	struct device		*dev;
 	struct rc_dev		*rdev;
 	struct regmap		*regmap;
···
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	priv->base = devm_ioremap_resource(dev, res);
-	if (IS_ERR((__force void *)priv->base))
-		return PTR_ERR((__force void *)priv->base);
+	if (IS_ERR(priv->base))
+		return PTR_ERR(priv->base);
 
 	priv->irq = platform_get_irq(pdev, 0);
 	if (priv->irq < 0) {