libobs: Deprecate obs_(nv12|p010)_tex_active()

libobs/obs.h

@@ -837,8 +837,8 @@ EXPORT uint64_t obs_get_frame_interval_ns(void);
 EXPORT uint32_t obs_get_total_frames(void);
 EXPORT uint32_t obs_get_lagged_frames(void);
 
-EXPORT bool obs_nv12_tex_active(void);
-EXPORT bool obs_p010_tex_active(void);
+OBS_DEPRECATED EXPORT bool obs_nv12_tex_active(void);
+OBS_DEPRECATED EXPORT bool obs_p010_tex_active(void);
 
 EXPORT void obs_apply_private_data(obs_data_t *settings);
 EXPORT void obs_set_private_data(obs_data_t *settings);