staging: rts5139: Use correct USB transfer interval to fix syslog spamming

Using correct transfer interval as specified by the USB endpoint
when doing the interrupt transfer fixes the warning printed by
xhci USB core on every transfer that resulted in spamming
"xhci_queue_intr_tx: 74 callbacks suppressed" to syslog
every 5 seconds.
Signed-off-by: Marcus Overhagen <marcus.overhagen@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rts5139/rts51x_transport.c

@@ -635,10 +635,10 @@ int rts51x_get_epc_status(struct rts51x_chip *chip, u16 *status)
 	ep = chip->usb->pusb_dev->ep_in[usb_pipeendpoint(pipe)];
 
 	/* fill and submit the URB */
-	/* We set interval to 1 here, so the polling interval is controlled
-	 * by our polling thread */
+	/* Set interval to 10 here to match the endpoint descriptor,
+	 * the polling interval is controlled by the polling thread */
 	usb_fill_int_urb(chip->usb->intr_urb, chip->usb->pusb_dev, pipe,
-			 status, 2, urb_done_completion, &urb_done, 1);
+			 status, 2, urb_done_completion, &urb_done, 10);
 
 	result = rts51x_msg_common(chip, chip->usb->intr_urb, 100);