usb-device-hid: Return True after submit_xfer.

This tells the caller that no error has occurred. The child classes can
use this state to do double buffering correctly.

If any fundamental error occurs in submit_xfer, the underlying code will
raise an exception.

Signed-off-by: Hyx <[email protected]>

Author: hyx0329

micropython/usb/usb-device-hid/usb/device/hid.py

@@ -123,6 +123,7 @@ def send_report(self, report_data, timeout_ms=100):
         if not self.is_open():
             return False
         self.submit_xfer(self._int_ep, report_data)
+        return True
 
     def desc_cfg(self, desc, itf_num, ep_num, strs):
         # Add the standard interface descriptor