Arm backend: Move support_extension to base class

[oscarandersson8218]

Move support_extension to TosaSpecification base class to avoid having to check whether the TosaSpecification is an instance of TosaSpecification_1_00.

cc @freddan80 @per @zingo @digantdesai

[pytorch-bot]

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❌ 10 New Failures, 1 Cancelled Job, 3 Unrelated Failures

As of commit 9514e28 with merge base 65d4b94 ():

NEW FAILURES - The following jobs have failed:

• Apple / build-demo-ios / macos-job (gh)
  RuntimeError: Command bash /Users/runner/work/_temp/exec_script failed with exit code 74
• pull / android / run-emulator (gh)
  The process '/usr/bin/sh' failed with exit code 255
• pull / test-eval_llama-wikitext-linux / linux-job (gh)
  RuntimeError: Command docker exec -t 935f660da85524381585507a5157fa4a3f903b7e858edabadcbbb2dc0c33a0fb /exec failed with exit code 1
• pull / test-llama-lora-linux / linux-job (gh)
  RuntimeError: Command docker exec -t 89b3027eaf2b1a2973f5819e1c3e4aabb8d1384a1e951a9707e500c83e2ea0c0 /exec failed with exit code 1
• pull / test-llama-runner-linux-android / linux-job (gh)
  RuntimeError: Command docker exec -t b512a63f0fa8e21c08de089ef7435c6d5e3d3909e2db00c91031a853b11be5f8 /exec failed with exit code 1
• pull / test-models-linux (ic4, xnnpack-quantization-delegation, linux.4xlarge.memory) / linux-job (gh)
  RuntimeError: Command docker exec -t e2773b6a57793a5b300e84ce99fddd29990a3827d62d33484617704133ec7f40 /exec failed with exit code 1
• pull / test-models-linux-basic (vit, portable, buck2, linux.2xlarge, executorch-ubuntu-22.04-clang12) / linux-job (gh)
  RuntimeError: Command docker exec -t b301c8dcec3481d1f9a10eed8b91cc664a1dfaefb6826de5c85f730aadfae0e4 /exec failed with exit code 1
• pull / test-qnn-wheel-packages-linux (3.10) / linux-job (gh)
  RuntimeError: Command docker exec -t 8f5991c59b9d3924bb2ca017e04e5adaa1c546f05994767af302a829e495401b /exec failed with exit code 1
• pull / test-quantized-aot-lib-linux / linux-job (gh)
  RuntimeError: Command docker exec -t c52a1d8ce404c68149026fa18e040840d5ecc1ab7819394d663f93962da31b01 /exec failed with exit code 1
• pull / test-static-llama-qnn-linux (stories_110m) / linux-job (gh)
  RuntimeError: Command docker exec -t 2021da6940a765267aed6cf14186e79db8ed0ca39eb42abb2df54b1742d9875a /exec failed with exit code 1

CANCELLED JOB - The following job was cancelled. Please retry:

• periodic / gather-models (gh)

BROKEN TRUNK - The following jobs failed but were present on the merge base:

👉 Rebase onto the `viable/strict` branch to avoid these failures

• pull / unittest / linux / linux-job (gh) (trunk failure)
  exir/backend/test/test_lowered_backend_module.py::TestBackendAPI::test_emit_nested_lowered_backend_module
• pull / unittest-editable / linux / linux-job (gh) (trunk failure)
  exir/backend/test/test_lowered_backend_module.py::TestBackendAPI::test_emit_nested_lowered_backend_module
• trunk / unittest-release / linux / linux-job (gh) (trunk failure)
  exir/backend/test/test_lowered_backend_module.py::TestBackendAPI::test_emit_nested_lowered_backend_module

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[zingo]

Nice cleanup :)