glsl_type: Add packed to structure type comparison for hash map

Fixes: 659f333b3a4ff "glsl: add packed for struct types"
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6767>
1 file changed