ASoC: amd: 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>
Link: https://lore.kernel.org/r/20190904074833.23572-1-yuehaibing@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/amd/acp-pcm-dma.c

@@ -1251,8 +1251,7 @@ static int acp_audio_probe(struct platform_device *pdev)
 	if (!audio_drv_data)
 		return -ENOMEM;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	audio_drv_data->acp_mmio = devm_ioremap_resource(&pdev->dev, res);
+	audio_drv_data->acp_mmio = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(audio_drv_data->acp_mmio))
 		return PTR_ERR(audio_drv_data->acp_mmio);