pwm: imx27: Use devm_platform_ioremap_resource() to simplify code

Use the new helper devm_platform_ioremap_resource() which wraps the
platform_get_resource() and devm_ioremap_resource() together, to
simplify the code.
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Mukesh Ojha <mojha@codeaurora.org>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>

drivers/pwm/pwm-imx27.c

@@ -291,7 +291,6 @@ MODULE_DEVICE_TABLE(of, pwm_imx27_dt_ids);
 static int pwm_imx27_probe(struct platform_device *pdev)
 {
 	struct pwm_imx27_chip *imx;
-	struct resource *r;
 
 	imx = devm_kzalloc(&pdev->dev, sizeof(*imx), GFP_KERNEL);
 	if (imx == NULL)
@@ -326,8 +325,7 @@ static int pwm_imx27_probe(struct platform_device *pdev)
 	imx->chip.of_xlate = of_pwm_xlate_with_flags;
 	imx->chip.of_pwm_n_cells = 3;
 
-	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	imx->mmio_base = devm_ioremap_resource(&pdev->dev, r);
+	imx->mmio_base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(imx->mmio_base))
 		return PTR_ERR(imx->mmio_base);