media: rc: sunxi-cir: Make use of the helper function devm_platform_ioremap_resource()

Use the devm_platform_ioremap_resource() helper instead of
calling platform_get_resource() and devm_ioremap_resource()
separately

Signed-off-by: Cai Huoqing <[e-mail]>
Acked-by: Maxime Ripard <[e-mail]>
Signed-off-by: Hans Verkuil <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/media/rc/sunxi-cir.c

···
 	struct device *dev = &pdev->dev;
 	struct device_node *dn = dev->of_node;
 	const struct sunxi_ir_quirks *quirks;
-	struct resource *res;
 	struct sunxi_ir *ir;
 	u32 b_clk_freq = SUNXI_IR_BASE_CLK;
 
···
 	dev_dbg(dev, "set base clock frequency to %d Hz.\n", b_clk_freq);
 
 	/* IO */
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	ir->base = devm_ioremap_resource(dev, res);
+	ir->base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(ir->base)) {
 		return PTR_ERR(ir->base);
 	}