glsl: avoid rebuilding builtin functions on mtypes.h changes.

Restrict to when shader types or consts change

Acked-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14437>

src/compiler/glsl/builtin_functions.cpp

@@ -75,7 +75,8 @@
 
 #include <stdarg.h>
 #include <stdio.h>
-#include "main/mtypes.h"
+#include "main/consts_exts.h"
+#include "main/shader_types.h"
 #include "main/shaderobj.h"
 #include "ir_builder.h"
 #include "glsl_parser_extras.h"