soc: ti: use request_firmware_direct() as acc firmware is optional

When firmware image for PDSP firmware is absent in the file system
the kernel boot with ramfs/nfs is stuck for 60 seconds being the
the default timeout. request_firmware_direct() is to take care of
such optional firmware loading and hence replace the call in the
driver with this API.
Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: Santosh Shilimkar <ssantosh@kernel.org>

drivers/soc/ti/knav_qmss_queue.c

@@ -1519,7 +1519,7 @@ static int knav_queue_load_pdsp(struct knav_device *kdev,
 
 	for (i = 0; i < ARRAY_SIZE(knav_acc_firmwares); i++) {
 		if (knav_acc_firmwares[i]) {
-			ret = request_firmware(&fw,
+			ret = request_firmware_direct(&fw,
 						      knav_acc_firmwares[i],
 						      kdev->dev);
 			if (!ret) {