fbdev: s3c-fb: use devm_platform_ioremap_resource() to simplify code

Use devm_platform_ioremap_resource() to simplify the code a bit.
This is detected by coccinelle.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: Jingoo Han <jingoohan1@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190904115523.25068-1-yuehaibing@huawei.com

drivers/video/fbdev/s3c-fb.c

@@ -1411,8 +1411,7 @@ static int s3c_fb_probe(struct platform_device *pdev)
 
 	pm_runtime_enable(sfb->dev);
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	sfb->regs = devm_ioremap_resource(dev, res);
+	sfb->regs = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(sfb->regs)) {
 		ret = PTR_ERR(sfb->regs);
 		goto err_lcd_clk;