Tegra firmware doesn't actually use any version numbers and passing -1
causes the existing firmware binaries not to be found. Use version 0 to
find the correct files.
Fixes: ef16dc278ec2 ("drm/nouveau/gr/gf100-: select implementation based on available FW") Signed-off-by: Thierry Reding <treding@nvidia.com> Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>