vp9_encoder: make setup_tpl_stats() static
vp9_encoder: make setup_tpl_stats() static

Change-Id: If96519fb1cb4963cb6548c803253359a35621eb0

webmproject/libvpx,ShiftMediaProject/libvpx,webmproject/libvpx,ShiftMediaProject/libvpx,ShiftMediaProject/libvpx,ShiftMediaProject/libvpx,ShiftMediaProject/libvpx,webmproject/libvpx,webmproject/libvpx,webmproject/libvpx,webmproject/libvpx