USB: cdc-acm: use define for timeout

We have a symbolic name for the standard timeout.
Use it. No functional change intended.
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Link: https://lore.kernel.org/r/20220629132638.31810-1-oneukum@suse.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/class/cdc-acm.c

@@ -119,7 +119,7 @@ static int acm_ctrl_msg(struct acm *acm, int request, int value,
 	retval = usb_control_msg(acm->dev, usb_sndctrlpipe(acm->dev, 0),
 		request, USB_RT_ACM, value,
 		acm->control->altsetting[0].desc.bInterfaceNumber,
-		buf, len, 5000);
+		buf, len, USB_CTRL_SET_TIMEOUT);
 
 	dev_dbg(&acm->control->dev,
 		"%s - rq 0x%02x, val %#x, len %#x, result %d\n",