drm/nouveau/disp: fix HDMI on gt215+

Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: Lyude Paul <lyude@redhat.com>
Fixes: f530bc60

 ("drm/nouveau/disp: move HDMI config into acquire + infoframe methods")
Signed-off-by: Karol Herbst <kherbst@redhat.com>
Reviewed-by: Ben Skeggs <bskeggs@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230628212248.3798605-1-kherbst@redhat.com
Signed-off-by: Karol Herbst <kherbst@redhat.com>