lib/igt_kms: Add support for up to 10 planes.

Increase the number of planes supported to 10.

kmstest_plane_name only previously supported 4 planes,
this patch adds support for up to 10 planes.

Signed-off-by: Robert Foss <robert.foss@collabora.com>
Signed-off-by: Marius Vlad <marius.c.vlad@intel.com>
2 files changed