glsl/nir: Include early glsl-to-nir output in NIR_DEBUG=print.

glsl/nir: Include early glsl-to-nir output in NIR_DEBUG=print.

These passes were missing the macros to handle debug output and extra
validation.  But also, for working on GLSL, it's nice to see the raw
output of glsl-to-nir before you move on.

Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21751>