Small fixes

Author: larryliu0820

extension/pybindings/test/make_test.py

@@ -11,7 +11,8 @@
 from typing import Any, Callable, Optional, Tuple
 
 import torch
-from executorch.exir import ExecutorchProgramManager, to_edge
+from executorch.exir import ExecutorchBackendConfig, ExecutorchProgramManager, to_edge
+from executorch.exir.passes import MemoryPlanningPass
 from torch.export import export