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 <hyx0329@outlook.com>

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

@@ -1,3 +1,3 @@
-metadata(version="0.1.0")
+metadata(version="0.1.1")
 require("usb-device")
 package("usb")

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

@@ -123,6 +123,7 @@ class HIDInterface(Interface):
         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