pwm: brcmstb: Convert to devm_platform_ioremap_resource()

Use devm_platform_ioremap_resource() to simplify code.
Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Reviewed-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>

drivers/pwm/pwm-brcmstb.c

@@ -234,7 +234,6 @@ MODULE_DEVICE_TABLE(of, brcmstb_pwm_of_match);
 static int brcmstb_pwm_probe(struct platform_device *pdev)
 {
 	struct brcmstb_pwm *p;
-	struct resource *res;
 	int ret;
 
 	p = devm_kzalloc(&pdev->dev, sizeof(*p), GFP_KERNEL);
@@ -262,8 +261,7 @@ static int brcmstb_pwm_probe(struct platform_device *pdev)
 	p->chip.base = -1;
 	p->chip.npwm = 2;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	p->base = devm_ioremap_resource(&pdev->dev, res);
+	p->base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(p->base)) {
 		ret = PTR_ERR(p->base);
 		goto out_clk;