drm/nouveau/gr/r535: initial support

Adds support for allocating GR classes from RM.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230918202149.4343-41-skeggsb@gmail.com

drm/nouveau/gr/tu102-: prepare for GSP-RM

- (temporarily) disable if GSP-RM detected, will be added later
- make init() optional

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230918202149.4343-27-skeggsb@gmail.com

drm/nouveau/fifo/ga100-: add per-runlist nonstall intr handling

GSP-RM will enforce this, so implement on HW too so we can share code.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Karol Herbst <kherbst@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Karol Herbst <kherbst@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230525003106.3853741-8-skeggsb@gmail.com

drm/nouveau/gr/ga102: initial support

v2:
- whitespace

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Gourav Samaiya <gsamaiya@nvidia.com>