dix: unexport some lookup functions

These aren't used by any drivers, so no need to export them.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1380>

glx/glxcmds.c

@@ -34,10 +34,12 @@
 
 #include <string.h>
 #include <assert.h>
-
-#include "glxserver.h"
 #include <GL/glxtokens.h>
 #include <X11/extensions/presenttokens.h>
+
+#include "dix/dix_priv.h"
+
+#include "glxserver.h"
 #include <unpack.h>
 #include <pixmapstr.h>
 #include <windowstr.h>

glx/xfont.c

@@ -32,6 +32,8 @@
 #include <dix-config.h>
 #endif
 
+#include "dix/dix_priv.h"
+
 #include "glxserver.h"
 #include "glxutil.h"
 #include "unpack.h"