drm/nouveau/subdev: always upcast through nouveau_subdev()/nouveau_engine()

Has additional safeties for one.  For two, needed for an upcoming
commit that removes abuse of nouveau_object.engine.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2014-12-03 17:07:22 +10:00
commit 2f4a58e852
23 changed files with 23 additions and 23 deletions