dmaengine: imx-sdma: don't print warning when firmware is absent

The SDMA firmware is optional and a usable fallback to the internal
ROM firmware is present in the driver. There is already a message
printed informing the user that the internal firmware is used, so
there is no need to print a scary warning for what is normal operation
on most systems.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Link: https://lore.kernel.org/r/20240516102532.213874-2-l.stach@pengutronix.de
Signed-off-by: Vinod Koul <vkoul@kernel.org>

Author: lynxeye-dev

drivers/dma/imx-sdma.c

@@ -2107,9 +2107,8 @@ static int sdma_get_firmware(struct sdma_engine *sdma,
 {
 	int ret;
 
-	ret = request_firmware_nowait(THIS_MODULE,
-			FW_ACTION_UEVENT, fw_name, sdma->dev,
-			GFP_KERNEL, sdma, sdma_load_firmware);
+	ret = firmware_request_nowait_nowarn(THIS_MODULE, fw_name, sdma->dev,
+					GFP_KERNEL, sdma, sdma_load_firmware);
 
 	return ret;
 }