bus: brcmstb_gisb: Use devm_platform_get_and_ioremap_resource()

Convert platform_get_resource(), devm_ioremap_resource() to a single
call to devm_platform_get_and_ioremap_resource(), as this is exactly
what this function does.

Signed-off-by: Ye Xingchen <ye.xingchen@zte.com.cn>
Link: https://lore.kernel.org/r/202302081537158530029@zte.com.cn
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>

Author: Ye Xingchen

drivers/bus/brcmstb_gisb.c

@@ -401,12 +401,10 @@ static int __init brcmstb_gisb_arb_probe(struct platform_device *pdev)
 	struct device_node *dn = pdev->dev.of_node;
 	struct brcmstb_gisb_arb_device *gdev;
 	const struct of_device_id *of_id;
-	struct resource *r;
 	int err, timeout_irq, tea_irq, bp_irq;
 	unsigned int num_masters, j = 0;
 	int i, first, last;
 
-	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	timeout_irq = platform_get_irq(pdev, 0);
 	tea_irq = platform_get_irq(pdev, 1);
 	bp_irq = platform_get_irq(pdev, 2);
@@ -418,7 +416,7 @@ static int __init brcmstb_gisb_arb_probe(struct platform_device *pdev)
 	mutex_init(&gdev->lock);
 	INIT_LIST_HEAD(&gdev->next);
 
-	gdev->base = devm_ioremap_resource(&pdev->dev, r);
+	gdev->base = devm_platform_get_and_ioremap_resource(pdev, 0, NULL);
 	if (IS_ERR(gdev->base))
 		return PTR_ERR(gdev->base);