Update on "[ExecuTorch] Arm Ethos: Add pass tests"

As title.

Adds pytest.test_option["tosa_ref_model"] similar to "corestone_fvp". This is a hack. Once we buckify the reference model, we should remove this. It shouldn't have impact on the OSS test coverage.

Differential Revision: [D69714010](https://our.internmc.facebook.com/intern/diff/D69714010/)

[ghstack-poisoned]

Author: digantdesai

backends/arm/test/conftest.py

@@ -13,7 +13,6 @@
 from typing import Any
 
 import pytest
-import logging
 
 try:
     import tosa_reference_model
@@ -43,7 +42,7 @@ def pytest_configure(config):
                 "Tests are run with --arm_run_corstoneFVP but corstone FVP is not installed."
             )
         # Only enable if we also have the TOSA reference model available.
-        pytest._test_options["corstone_fvp"] = tosa_reference_model is not None  # type: ignore[attr-defined]
+        pytest._test_options["corstone_fvp"] = True  # type: ignore[attr-defined]
 
     pytest._test_options["fast_fvp"] = False  # type: ignore[attr-defined]
     if getattr(config.option, "fast_fvp", False):

backends/arm/test/targets.bzl

@@ -5,6 +5,9 @@ def define_arm_tests():
     # TODO Add more tests
     test_files = native.glob(["passes/test_*.py"])
 
+    # https://github.com/pytorch/executorch/issues/8606
+    test_files.remove("passes/test_ioquantization_pass.py")
+
     TESTS = {}
 
     for test_file in test_files: