nvnflinger: allow locking framerate during video playback

src/common/settings.cpp

@@ -235,6 +235,7 @@ void RestoreGlobalState(bool is_powered_on) {
     values.bg_green.SetGlobal(true);
     values.bg_blue.SetGlobal(true);
     values.enable_compute_pipelines.SetGlobal(true);
+    values.use_video_framerate.SetGlobal(true);
 
     // System
     values.language_index.SetGlobal(true);