aco: add some helpers for filling/testing register ranges

We do this a lot

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Tested-by: Marge Bot <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3768>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3768>
1 file changed