drm/nouveau: fix non-EDIDful native mode selection

The DRM core fills this value, but at too late a stage for this to work,
possibly resulting in an undesirable mode being selected.

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

drivers/gpu/drm/nouveau/nouveau_connector.c

@@ -507,6 +507,7 @@ nouveau_connector_native_mode(struct drm_connector *connector)
 	int high_w = 0, high_h = 0, high_v = 0;
 
 	list_for_each_entry(mode, &nv_connector->base.probed_modes, head) {
+		mode->vrefresh = drm_mode_vrefresh(mode);
 		if (helper->mode_valid(connector, mode) != MODE_OK ||
 		    (mode->flags & DRM_MODE_FLAG_INTERLACE))
 			continue;