XDarwin: mass change from using xorg-config.h to dix-config.h cuz we're not using the X.org ddx anymore

hw/darwin/quartz/xpr/xprFrame.c

@@ -27,9 +27,9 @@
  * holders shall not be used in advertising or otherwise to promote the sale,
  * use or other dealings in this Software without prior written authorization.
  */
-#ifdef HAVE_XORG_CONFIG_H
-#include <xorg-config.h>
-#endif
+
+#include <dix-config.h>
+
 #include "xpr.h"
 #include "rootlessCommon.h"
 #include "Xplugin.h"