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

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/nouveau_state.c

@@ -737,8 +737,9 @@ nouveau_card_init(struct drm_device *dev)
 			}
 			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;