Merge pull request #730 from dp-arm/dp/uuid-cleanup

Remove non-standard <sys/cdefs.h> include from uuid.h
diff --git a/include/lib/stdlib/sys/uuid.h b/include/lib/stdlib/sys/uuid.h
index 5c4767b..d43b641 100644
--- a/include/lib/stdlib/sys/uuid.h
+++ b/include/lib/stdlib/sys/uuid.h
@@ -34,8 +34,6 @@
 #ifndef _SYS_UUID_H_
 #define _SYS_UUID_H_
 
-#include <sys/cdefs.h>
-
 /* Length of a node address (an IEEE 802 address). */
 #define	_UUID_NODE_LEN		6