"Scan controller error" means that scan hardware encountered an error
prior to doing an actual test on the target CPU. It does not mean that
there is an actual cpu/core failure. "scan signature failure" indicates
that the test result on the target core did not match the expected value
and should be treated as a cpu failure.

Current driver classifies both these scenarios as failures. Modify
the driver to classify this situation with a more appropriate "untested"
status instead of "fail" status.
Signed-off-by: Jithu Joseph <jithu.joseph@intel.com>
Reviewed-by: Tony Luck <tony.luck@intel.com>
Reviewed-by: Ashok Raj <ashok.raj@intel.com>
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Link: https://lore.kernel.org/r/20240412172349.544064-2-jithu.joseph@intel.comReviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>