drm/nouveau: fix ENG_RUNLIST register address

Address of the ENG_RUNLIST register should be 0x002284 + (engine * 8),
not 0x002284 + (engine * 4).

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
1 file changed