avionic design with actual uboot and tooling

submodule of avionic design uboot bootloader and with included tools to
get you started , read readme.md and readme-tk1-loader.md

u-boot/include/stdlib.h

@@ -0,0 +1,12 @@
+/*
+ *  Copyright (C) 2013 Google Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef __STDLIB_H_
+#define __STDLIB_H_
+
+#include <malloc.h>
+
+#endif /* __STDLIB_H_ */