nouveau: treat nv04_devinit_priv.owner as signed.

[Dave Jones]

This is set and compared to -1 in the code, which evaluates to always false.
If we want to treat it as a signed var, we should declare it as one.

Signed-off-by: Dave Jones <davej at fedoraproject.org>

diff --git a/drivers/gpu/drm/nouveau/core/subdev/devinit/nv04.h b/drivers/gpu/drm/nouveau/core/subdev/devinit/nv04.h
index 23470a57510c..9d54c106dddf 100644
--- a/drivers/gpu/drm/nouveau/core/subdev/devinit/nv04.h
+++ b/drivers/gpu/drm/nouveau/core/subdev/devinit/nv04.h
@@ -5,7 +5,7 @@
 
 struct nv04_devinit_priv {
 	struct nouveau_devinit base;
-	u8 owner;
+	s8 owner;
 };
 
 int  nv04_devinit_ctor(struct nouveau_object *, struct nouveau_object *,