drm/nouveau/kms/gv100-: add support for plane zpos property

Has a nice side-effect that we only update HW for this when it changes now,
rather than every time we do a page flip.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2019-06-11 16:46:13 +10:00
commit 9a99e904cc
5 changed files with 40 additions and 12 deletions