add global step info for known subgraph in unknown model and generate om for remained cases when some single op cases run atc failed

ge/hybrid/node_executor/compiledsubgraph/known_node_executor.cc

@@ -188,6 +188,7 @@ Status KnownNodeExecutor::SetDaviciModel(const HybridModel &model, const NodePtr
   davinci_model->SetDumpModelName(model.GetModelName());
   davinci_model->SetOmName(model.GetOmName());
   void *global_step = model.GetGlobalStep();
+  GE_CHECK_NOTNULL(global_step);
   davinci_model->SetGlobalStep(global_step, sizeof(int64_t));
   // set model id as root node's node id
   davinci_model->SetSubModelId(node->GetOpDesc()->GetId());