drm/nouveau/gr/tu102-: use sw_veid_bundle_init from firmware

NVIDIA provided this on Turing, but we kept using the hardcoded version
from Volta (where they didn't).

Switch to the firmware version prior to Ampere.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>