xhci: set timer to retry xfers

Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

hw/usb/hcd-xhci.c

@@ -2224,6 +2224,8 @@ static void xhci_kick_ep(XHCIState *xhci, unsigned int slotid,
         if (xfer->running_retry) {
             DPRINTF("xhci: xfer nacked, stopping schedule\n");
             epctx->retry = xfer;
+            timer_mod(epctx->kick_timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) +
+                      epctx->interval * 125000);
             break;
         }
     }