pwm: pxa: 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-pxa.c

@@ -166,7 +166,6 @@ static int pwm_probe(struct platform_device *pdev)
 {
 	const struct platform_device_id *id = platform_get_device_id(pdev);
 	struct pxa_pwm_chip *pwm;
-	struct resource *r;
 	int ret = 0;
 
 	if (IS_ENABLED(CONFIG_OF) && id == NULL)
@@ -193,8 +192,7 @@ static int pwm_probe(struct platform_device *pdev)
 		pwm->chip.of_pwm_n_cells = 1;
 	}
 
-	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	pwm->mmio_base = devm_ioremap_resource(&pdev->dev, r);
+	pwm->mmio_base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(pwm->mmio_base))
 		return PTR_ERR(pwm->mmio_base);