b91b8ff81 tests/kms_flip: test suspend at most twice on SNB && BMG
17f66eb8b tests/kms_flip: staticize & remove unused global vars
2b6d18c61 tests/kms_flip: limit number of outputs wrt suspend
e068d219e tests/kms_flip: limit output pairs when testing suspend
735c6ff2d tests/kms_flip: run suspend tests on one pipe per output
2369475ba tests/kms_flip: test suspend on one pair of pipes