drm/nouveau: add missing DCB connector types

drm/nouveau: add missing DCB connector types

* Add missing DCB connectors in conn.h as per the NVIDIA DCB specification.

A lot of connector logic was rewritten for Linux v6.5; some display connector types
went unaccounted-for which caused kernel warnings on devices with the now-unsupported
DCB connectors. This patch adds all of the DCB connectors as defined by NVIDIA to the
dcb_connector_type enum to bring back support for these connectors to the new logic.

Fixes: 8b7d92cad953 ("drm/nouveau/kms/nv50-: create connectors based on nvkm info")
Link: https://download.nvidia.com/open-gpu-doc/DCB/1/DCB-4.0-Specification.html#_connector_table_entry
Signed-off-by: Alex Ramírez <lxrmrz732@rocketmail.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
[Lyude: Clarify DCB_CONNECTOR_HDMI_0 weirdness in comments]
Signed-off-by: Lyude Paul <lyude@redhat.com>
Link: https://patch.msgid.link/20251213005327.9495-2-lxrmrz732@gmail.com