drm/nouveau: fix nvif/device.h is included more than once

remove duplicate inclusion of nvif/device.h

Issue identified by includecheck
Signed-off-by: Hariprasad Kelam <hariprasad.kelam@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/nouveau_drv.h

@@ -130,7 +130,6 @@ nouveau_cli(struct drm_file *fpriv)
 }
 
 #include <nvif/object.h>
-#include <nvif/device.h>
 
 struct nouveau_drm {
 	struct nouveau_cli master;