drm/nouveau/pm: allow zeroed signals to enable sources

Hardware signals index 0x00 are defined for some domains and they have
to be allowed to enable sources like the others.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Samuel Pitoiset 2015-08-04 23:58:12 +02:00 • committed by Ben Skeggs
commit 7fe882eb90