Add non standard request handling in class

For some reason bluetooth stack implementations send class requests
to device instead of interface.
To implement HCI interface over USB non device addressed requests
for class need to be handled.

src/device/usbd.c

@@ -507,6 +507,18 @@ static bool process_control_request(uint8_t rhport, tusb_control_request_t const
   {
     //------------- Device Requests e.g in enumeration -------------//
     case TUSB_REQ_RCPT_DEVICE:
+      if ( TUSB_REQ_TYPE_CLASS == p_request->bmRequestType_bit.type )
+      {
+          uint8_t const itf = tu_u16_low(p_request->wIndex);
+          TU_VERIFY(itf < TU_ARRAY_SIZE(_usbd_dev.itf2drv));
+
+          uint8_t const drvid = _usbd_dev.itf2drv[itf];
+          TU_VERIFY(drvid < USBD_CLASS_DRIVER_COUNT);
+
+          // forward to class driver: "non-STD request to Interface"
+          TU_VERIFY(invoke_class_control(rhport, drvid, p_request));
+          return true;
+      }
       if ( TUSB_REQ_TYPE_STANDARD != p_request->bmRequestType_bit.type )
       {
         // Non standard request is not supported