tests: kms: Implement universal planes test

This small program allows universal planes to be tested. Currently this
isn't very flexible because it allows only the first plane of a given
type to be tested on the first CRTC. However it should be simple to
extend this with some additional command-line arguments.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>