drm/nouveau/kms/nv50-: use __drm_atomic_helper_plane_reset()

We have some of this open-coded already, use the helper to prevent problems
when adding (for example) support for the alpha property.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2019-06-11 18:04:42 +10:00
commit a4ec848910