Move buildroot to bsp directory.

bsp/buildroot/package/dhrystone/0004-headers.patch

@@ -0,0 +1,15 @@
+get prototypes for malloc/exit/strcpy
+
+Patch by Mike Frysinger <vapier@gentoo.org>
+
+--- a/dhry.h
++++ b/dhry.h
+@@ -388,6 +388,8 @@
+ /* General definitions: */
+ 
+ #include <stdio.h>
++#include <stdlib.h>
++#include <string.h>
+                 /* for strcpy, strcmp */
+ 
+ #define Null 0