[SYCL] Hotfix for XPTI tests

[alexbatashev]

Pre-commit is failing with the following error:

lit.py: /__w/llvm/llvm/lit/lit/TestingConfig.py:103: fatal: unable to parse config file '/__w/llvm/llvm/llvm_test_suite/SYCL/lit.cfg.py', traceback: Traceback (most recent call last):
  File "/__w/llvm/llvm/lit/lit/TestingConfig.py", line 92, in load_from_path
    exec(compile(data, path, 'exec'), cfg_globals, None)
  File "/__w/llvm/llvm/llvm_test_suite/SYCL/lit.cfg.py", line 341, in <module>
    if os.path.exists(xptifw_lib) and os.path.exists(os.path.join(xptifw_includes, 'xpti', 'xpti_trace_framework.h')):
NameError: name 'xptifw_lib' is not defined

[bader]

@alexbatashev, how did you manage to pass pre-commit with the breaking change?

[alexbatashev]

@alexbatashev, how did you manage to pass pre-commit with the breaking change?

I have no idea.