pwm: spear: 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: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>

drivers/pwm/pwm-spear.c

@@ -174,7 +174,6 @@ static int spear_pwm_probe(struct platform_device *pdev)
 {
 	struct device_node *np = pdev->dev.of_node;
 	struct spear_pwm_chip *pc;
-	struct resource *r;
 	int ret;
 	u32 val;
 
@@ -182,8 +181,7 @@ static int spear_pwm_probe(struct platform_device *pdev)
 	if (!pc)
 		return -ENOMEM;
 
-	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	pc->mmio_base = devm_ioremap_resource(&pdev->dev, r);
+	pc->mmio_base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(pc->mmio_base))
 		return PTR_ERR(pc->mmio_base);