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/net/cdp.h

@@ -0,0 +1,22 @@
+/*
+ *	Copied from Linux Monitor (LiMon) - Networking.
+ *
+ *	Copyright 1994 - 2000 Neil Russell.
+ *	(See License)
+ *	Copyright 2000 Roland Borde
+ *	Copyright 2000 Paolo Scaffardi
+ *	Copyright 2000-2002 Wolfgang Denk, wd@denx.de
+ *	SPDX-License-Identifier:	GPL-2.0
+ */
+
+#if defined(CONFIG_CMD_CDP)
+
+#ifndef __CDP_H__
+#define __CDP_H__
+
+void cdp_start(void);
+/* Process a received CDP packet */
+void cdp_receive(const uchar *pkt, unsigned len);
+
+#endif /* __CDP_H__ */
+#endif