aco: implement 8-bit/16-bit mov's with p_create_vector

ACO doesn't lower 8-bit/16-bit mov's in NIR.

Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/2997
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4966>
1 file changed