extract the delegate segments to allow emit large models (#2714)

Summary:
Pull Request resolved: #2714

If the delegated blob is part of flatbffers, it will exceed the flatbuffers limit (4GB). extract the segments as default for qnn backend

Reviewed By: kirklandsign

Differential Revision: D55432338

fbshipit-source-id: 2b0869ec917970b67651cb77dbafdd724b681e76

examples/qualcomm/scripts/utils.py

@@ -226,6 +226,7 @@ def build_executorch_binary(
                 alloc_graph_input=not shared_buffer,
                 alloc_graph_output=not shared_buffer,
             ),
+            extract_delegate_segments=True,
         )
     )
     with open(f"{file_name}.pte", "wb") as file: