89e32100c lib/kms: Make igt_first_crtc_with_single_output() skip if no CRTC/output can be found
c57afb775 lib/kms: Make igt_first_crtc() skip if no CRTCs are around
f108deff4 tests/nouveau_crc: Use igt_first_crtc() instead of igt_crtc_for_pipe()
09ee30d64 tests/nouveau_crc: Convert to dynamic subtests
939bb5833 tests/nouveau_crc: Extract {setup,cleanup}_test()