usb: Add nonblock argument to submit_int_msg

This will be used to implement non-blocking keyboard polling in case of
errors.

Signed-off-by: Michal Suchanek <msuchanek@suse.de>
diff --git a/drivers/usb/host/usb-sandbox.c b/drivers/usb/host/usb-sandbox.c
index ff9d5b7..28ee4b0 100644
--- a/drivers/usb/host/usb-sandbox.c
+++ b/drivers/usb/host/usb-sandbox.c
@@ -99,7 +99,7 @@
 
 static int sandbox_submit_int(struct udevice *bus, struct usb_device *udev,
 			      unsigned long pipe, void *buffer, int length,
-			      int interval)
+			      int interval, bool nonblock)
 {
 	struct udevice *emul;
 	int ret;
@@ -110,7 +110,8 @@
 	usbmon_trace(bus, pipe, NULL, emul);
 	if (ret)
 		return ret;
-	ret = usb_emul_int(emul, udev, pipe, buffer, length, interval);
+	ret = usb_emul_int(emul, udev, pipe, buffer, length, interval,
+			   nonblock);
 
 	return ret;
 }