busybox: fix build with recent eglibc toolchains

SVN-Revision: 33395

package/busybox/patches/005-resource_h_include.patch

+--- a/include/libbb.h
++++ b/include/libbb.h
+@@ -35,6 +35,7 @@
+ #include <sys/poll.h>
+ #include <sys/ioctl.h>
+ #include <sys/mman.h>
++#include <sys/resource.h>
+ #include <sys/socket.h>
+ #include <sys/stat.h>
+ #include <sys/time.h>