dma: imx-sdma: Treat firmware messages as warnings instead of erros

As the SDMA controller can operate without an external firmware being loaded,
treat the firmware related messages as warnings rather than errors.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>

drivers/dma/imx-sdma.c

@@ -1379,7 +1379,7 @@ static int __init sdma_probe(struct platform_device *pdev)
 	if (pdata) {
 		ret = sdma_get_firmware(sdma, pdata->fw_name);
 		if (ret)
-			dev_err(&pdev->dev, "failed to get firmware from platform data\n");
+			dev_warn(&pdev->dev, "failed to get firmware from platform data\n");
 	} else {
 		/*
 		 * Because that device tree does not encode ROM script address,
@@ -1389,11 +1389,11 @@ static int __init sdma_probe(struct platform_device *pdev)
 		ret = of_property_read_string(np, "fsl,sdma-ram-script-name",
 					      &fw_name);
 		if (ret)
-			dev_err(&pdev->dev, "failed to get firmware name\n");
+			dev_warn(&pdev->dev, "failed to get firmware name\n");
 		else {
 			ret = sdma_get_firmware(sdma, fw_name);
 			if (ret)
-				dev_err(&pdev->dev, "failed to get firmware from device tree\n");
+				dev_warn(&pdev->dev, "failed to get firmware from device tree\n");
 		}
 	}