intel/compiler: Expose brw_texture_offset to C

Some day we probably want to move it out of brw_shader if we're going to
share it with IBC but that can be another day.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5596>
1 file changed