bus: vexpress-config: Convert to devm_platform_ioremap_resource()

Use devm_platform_ioremap_resource() to simplify code.
Signed-off-by: Yangtao Li <frank.li@vivo.com>
Link: https://lore.kernel.org/r/20230706072042.31296-6-frank.li@vivo.comSigned-off-by: Sudeep Holla <sudeep.holla@arm.com>

drivers/bus/vexpress-config.c

@@ -350,7 +350,6 @@ static struct vexpress_config_bridge_ops vexpress_syscfg_bridge_ops = {
 static int vexpress_syscfg_probe(struct platform_device *pdev)
 {
 	struct vexpress_syscfg *syscfg;
-	struct resource *res;
 	struct vexpress_config_bridge *bridge;
 	struct device_node *node;
 	int master;
@@ -362,8 +361,7 @@ static int vexpress_syscfg_probe(struct platform_device *pdev)
 	syscfg->dev = &pdev->dev;
 	INIT_LIST_HEAD(&syscfg->funcs);
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	syscfg->base = devm_ioremap_resource(&pdev->dev, res);
+	syscfg->base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(syscfg->base))
 		return PTR_ERR(syscfg->base);