gpu: ipu-v3: prg: Convert to devm_platform_ioremap_resource()

Use devm_platform_ioremap_resource() to simplify code.
Signed-off-by: Yangtao Li <frank.li@vivo.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Link: https://lore.kernel.org/r/20230710032355.72914-8-frank.li@vivo.comSigned-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230710032355.72914-8-frank.li@vivo.com

drivers/gpu/ipu-v3/ipu-prg.c

@@ -358,7 +358,6 @@ EXPORT_SYMBOL_GPL(ipu_prg_channel_configure_pending);
 static int ipu_prg_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
-	struct resource *res;
 	struct ipu_prg *prg;
 	u32 val;
 	int i, ret;
@@ -367,12 +366,10 @@ static int ipu_prg_probe(struct platform_device *pdev)
 	if (!prg)
 		return -ENOMEM;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	prg->regs = devm_ioremap_resource(&pdev->dev, res);
+	prg->regs = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(prg->regs))
 		return PTR_ERR(prg->regs);
 
-
 	prg->clk_ipg = devm_clk_get(dev, "ipg");
 	if (IS_ERR(prg->clk_ipg))
 		return PTR_ERR(prg->clk_ipg);