v3d/compiler: fix spill offset

Reviewed-by: Alejandro PiƱeiro <apinheiro@igalia.com>
Reviewed-by: Jose Maria Casanova Crespo <jmcasanova@igalia.com>
Fixes: 97566efe5cac0ff11b ("v3d: Rematerialize MOVs of uniforms instead of spilling them.")
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5664>
1 file changed