power: reset: at91-sama5d2_shdwc: Convert to devm_platform_ioremap_resource()

Use devm_platform_ioremap_resource() to simplify code.
Signed-off-by: Yangtao Li <frank.li@vivo.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

drivers/power/reset/at91-sama5d2_shdwc.c

@@ -331,7 +331,6 @@ static const struct of_device_id at91_pmc_ids[] = {
 
 static int __init at91_shdwc_probe(struct platform_device *pdev)
 {
-	struct resource *res;
 	const struct of_device_id *match;
 	struct device_node *np;
 	u32 ddr_type;
@@ -349,8 +348,7 @@ static int __init at91_shdwc_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, at91_shdwc);
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	at91_shdwc->shdwc_base = devm_ioremap_resource(&pdev->dev, res);
+	at91_shdwc->shdwc_base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(at91_shdwc->shdwc_base))
 		return PTR_ERR(at91_shdwc->shdwc_base);