drm/nvd9/copy: initialise copy engine, seems to work like nvc0

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nouveau_state.c b/drivers/gpu/drm/nouveau/nouveau_state.c
index 9b4c900..f14abb1 100644
--- a/drivers/gpu/drm/nouveau/nouveau_state.c
+++ b/drivers/gpu/drm/nouveau/nouveau_state.c
@@ -737,8 +737,9 @@
 			}
 			break;
 		case NV_C0:
-			nvc0_copy_create(dev, 0);
 			nvc0_copy_create(dev, 1);
+		case NV_D0:
+			nvc0_copy_create(dev, 0);
 			break;
 		default:
 			break;