Patch for shared.h in qtsixa

--- QtSixA-1.5.1/sixad/shared.h.orig	2011-10-12 02:37:38.000000000 +0200
+++ QtSixA-1.5.1/sixad/shared.h	2012-04-10 13:36:49.119637000 +0200
@@ -18,6 +18,8 @@
 #ifndef SHARED_H
 #define SHARED_H

+#include <unistd.h>
+
 struct dev_led {
     bool enabled;
     bool anim;