intel/brw: Move out of fs_visitor and rename print instructions

They use the brw_print prefix now.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30169>

src/intel/compiler/brw_fs.cpp

@@ -1593,7 +1593,7 @@ fs_visitor::debug_optimizer(const nir_shader *nir,
                       iteration, pass_num, pass_name);
    if (ret == -1)
       return;
-   dump_instructions(filename);
+   brw_print_instructions(*this);
    free(filename);
 }