message: Disable MLIR HLO buffer-assignment test
  MLIR is getting more defensive against misconfiguration, the "trick" used for this test is not possible anymore.
diff: @@ -6,6 +6,7 @@ package(licenses = ["notice"])
  glob_lit_tests(
  data = [":test_utilities"],
  driver = "@llvm-project//mlir:run_lit.sh",
  + exclude = ["buffer-assignment.mlir"], # TODO(b/157616173)
  test_file_exts = ["mlir"],
  )
  