drm/atomic: add private obj state to state dump

The drm_atomic_print_new_state() already prints private object state via
drm_atomic_private_obj_print_state(). Add private object state dumping
to __drm_state_dump(), so that it is also included into drm_state_dump()
output and into debugfs/dri/N/state file.

Reviewed-by: Rob Clark <[e-mail]>
Acked-by: Maxime Ripard <[e-mail]>
Signed-off-by: Dmitry Baryshkov <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]

drivers/gpu/drm/drm_atomic.c

···
 	struct drm_crtc *crtc;
 	struct drm_connector *connector;
 	struct drm_connector_list_iter conn_iter;
+	struct drm_private_obj *obj;
 
 	if (!drm_drv_uses_atomic_modeset(dev))
 		return;
···
 	if (take_locks)
 		drm_modeset_unlock(&dev->mode_config.connection_mutex);
 	drm_connector_list_iter_end(&conn_iter);
+
+	list_for_each_entry(obj, &config->privobj_list, head) {
+		if (take_locks)
+			drm_modeset_lock(&obj->lock, NULL);
+		drm_atomic_private_obj_print_state(p, obj->state);
+		if (take_locks)
+			drm_modeset_unlock(&obj->lock);
+	}
 }
 
 /**