S_RAS_01 should show as Warning instead of SKIPPED if it's just ACPI table missing.

[anncheng-arm]

S_RAS_01 : 1214 : Check RAS SR Interface ERI/FHI are PPI
test_pool/ras/ras014.c:107 ras014_entry
Skipped at checkpoint - 2
Result: SKIPPED

Currently S_RAS_01 is marked as SKIPPED if just ACPI table missing, we should mark it as a warning when the ACPI table is missing, to remind partners/reviewers that it’s unclear whether this is due to a missing firmware table or because the feature is not supported.

@sunnywang-arm @chetan-rathore for vis