[Intel-gfx] [PATCH i-g-t v2 05/15] tests/kms: Clean up more users of unassigned pipes.

[Maarten Lankhorst]

How about this?

tests/kms: Clean up more users of unassigned pipes.

Use for_each_pipe_with_valid_output instead.

This may increase test time slightly on the affected tests, because now
outputs will be tested on every pipe instead of the first pipe. This 
will increase test coverage to all usable pipes though, so it shouldn't
be an issue.