ac: fix min/max_good_num_cu_per_sa on gfx10.3 with disabled SEs

Fixes: 9538b9a68ed - radeonsi: add support for Sienna Cichlid

Reviewed-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7542>
(cherry picked from commit f2977a162af46ff0b9d9334bb677b768900ba5d3)
4 files changed