modesetting: Add CTM RandR property

When the "CTM" (color transform matrix) modesetting property is available,
create a corresponding RandR property.

To match the format of the property available in the amdgpu driver, expose it as
an array of 18 32-bit XA_INTEGERs representing a 3x3 matrix in row-major order,
where each entry is a S31.32 sign-magnitude fixed-point number with the
fractional part listed first.

Signed-off-by: Aaron Plattner <aplattner@nvidia.com>
Acked-by: Michel Dänzer <mdaenzer@redhat.com>
Reviewed-by: James Jones <jajones@nvidia.com>
4 jobs for modesetting-ctm in 6 minutes and 11 seconds (queued for 1 second)
Status Job ID Name Coverage
  Docker Image
passed debian-testing #5274411

00:00:20

 
  Build And Test
passed autotools #5274412

00:05:50

passed meson #5274413

00:02:17

passed meson-noglamor #5274414

00:01:19