tests: Rename kms_pipe_color to kms_color

Rename kms_pipe_color to kms_color, and rename the invalid tests to pipe-invalid.
To prepare for adding support for plane color management.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Mika Kahola <mika.kahola@intel.com>
2 files changed