soc/tegra: pmc: Use 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]>
Signed-off-by: Thierry Reding <[e-mail]>

drivers/soc/tegra/pmc.c

···
 		return err;
 
 	/* take over the memory region from the early initialization */
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	base = devm_ioremap_resource(&pdev->dev, res);
+	base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(base))
 		return PTR_ERR(base);