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

- add R535 implementation of DEVINIT, we need some of this for boot
- add display disable fuse for ga100-

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230918202149.4343-9-skeggsb@gmail.com