Fix argument

Author: larryliu0820

examples/xnnpack/aot_compiler.py

@@ -129,7 +129,7 @@
     model_name = f"{args.model_name}_xnnpack_{quant_tag}"
     save_pte_program(exec_prog, model_name, args.output_dir)
 
-    if args.test_pybind:
+    if args.test_with_pybindings:
         logging.info("Testing the pte with pybind")
         from executorch.extension.pybindings.portable_lib import (
             _load_for_executorch_from_buffer,