wayland-egl: Add wl_egl_window ABI checker
Add a small ABI checker for wl_egl_window so that we can check for backwards incompatible changes at 'make check' time. Signed-off-by:Miguel A. Vico <mvicomoya@nvidia.com> Reviewed-by:
James Jones <jajones@nvidia.com> Acked-by:
Daniel Stone <daniels@collabora.com> Reviewed-by:
Emil Velikov <emil.velikov@collabora.com>