This extension is a backport of GL_ARB_sync to GLES 1.1 and 2.0
and reuses token IDs and entry point prototypes from that extension,
so adding support is pretty trivial.
Signed-off-by: Lucas Stach <dev@lynxeye.de>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/25789>