soc: bcm: bcm-pmb: 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]>
Signed-off-by: Florian Fainelli <[e-mail]>

drivers/soc/bcm/bcm63xx/bcm-pmb.c

···
 	struct device *dev = &pdev->dev;
 	const struct bcm_pmb_pd_data *table;
 	const struct bcm_pmb_pd_data *e;
-	struct resource *res;
 	struct bcm_pmb *pmb;
 	int max_id;
 	int err;
···
 
 	pmb->dev = dev;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	pmb->base = devm_ioremap_resource(&pdev->dev, res);
+	pmb->base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(pmb->base))
 		return PTR_ERR(pmb->base);