migrate dfu runtime device to new control xfer cb

src/class/dfu/dfu_rt_device.c

@@ -85,17 +85,14 @@ uint16_t dfu_rtd_open(uint8_t rhport, tusb_desc_interface_t const * itf_desc, ui
   return drv_len;
 }
 
-bool dfu_rtd_control_complete(uint8_t rhport, tusb_control_request_t const * request)
+// Invoked when a control transfer occurred on an interface of this class
+// Driver response accordingly to the request and the transfer stage (setup/data/ack)
+// return false to stall control endpoint (e.g unsupported request)
+bool dfu_rtd_control_xfer_cb(uint8_t rhport, uint8_t stage, tusb_control_request_t const * request)
 {
-  (void) rhport;
-  (void) request;
+  // nothing to do with DATA and ACK stage
+  if ( stage != CONTROL_STAGE_SETUP ) return true;
 
-  // nothing to do
-  return true;
-}
-
-bool dfu_rtd_control_request(uint8_t rhport, tusb_control_request_t const * request)
-{
   TU_VERIFY(request->bmRequestType_bit.recipient == TUSB_REQ_RCPT_INTERFACE);
 
   // dfu-util will try to claim the interface with SET_INTERFACE request before sending DFU request