enable configuring the bInterval on hid devices

Author: kolten

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

@@ -64,6 +64,7 @@ def __init__(
         set_report_buf=None,
         protocol=_INTERFACE_PROTOCOL_NONE,
         interface_str=None,
+        binterval=8,
     ):
         # Construct a new HID interface.
         #
@@ -91,6 +92,7 @@ def __init__(
         self._set_report_buf = set_report_buf
         self.protocol = protocol
         self.interface_str = interface_str
+        self.binterval = binterval
 
         self._int_ep = None  # set during enumeration
 
@@ -150,7 +152,7 @@ def desc_cfg(self, desc, itf_num, ep_num, strs):
         # Add the typical single USB interrupt endpoint descriptor associated
         # with a HID interface.
         self._int_ep = ep_num | _EP_IN_FLAG
-        desc.endpoint(self._int_ep, "interrupt", 8, 8)
+        desc.endpoint(self._int_ep, "interrupt", 8, self.binterval)
 
         self.idle_rate = 0