aco: collect Pre-Sched SGPRs/VGPRs before spilling

The usage after spilling is usually either the same as before or the
maximum.

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/25559>
1 file changed