modelV2: add big model bool (#38555)

modelV2: add big

openpilot/cereal/log.capnp

@@ -1043,6 +1043,7 @@ struct ModelDataV2 {
   timestampEof @3 :UInt64;
   modelExecutionTime @15 :Float32;
   rawPredictions @16 :Data;
+  big @27 :Bool;
 
   # predicted future position, orientation, etc..
   position @4 :XYZTData;

openpilot/selfdrive/modeld/modeld.py

@@ -128,6 +128,7 @@ class ModelState:
     self.output_slices = metadata['output_slices']
 
     self.prev_desire = np.zeros(ModelConstants.DESIRE_LEN, dtype=np.float32)
+    self.usbgpu = usbgpu
 
     self.frame_skip = ModelConstants.MODEL_RUN_FREQ // ModelConstants.MODEL_CONTEXT_FREQ
     self.input_queues, self.npy = make_input_queues(self.input_shapes, self.frame_skip, device=self.QUEUE_DEV)
@@ -380,6 +381,7 @@ def main(demo=False):
       fill_model_msg(modelv2_send, model_output, action,
                      publish_state, meta_main.frame_id, meta_extra.frame_id, frame_id,
                      frame_drop_ratio, meta_main.timestamp_eof, model_execution_time, live_calib_seen)
+      modelv2_send.modelV2.big = model.usbgpu
 
       desire_state = modelv2_send.modelV2.meta.desireState
       l_lane_change_prob = desire_state[log.Desire.laneChangeLeft]