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/configs/chromebook_link.h

@@ -0,0 +1,22 @@
+/*
+ * Copyright (c) 2011 The Chromium OS Authors.
+ * (C) Copyright 2008
+ * Graeme Russ, graeme.russ@gmail.com.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+/*
+ * board/config.h - configuration options, board specific
+ */
+
+#ifndef __CONFIG_H
+#define __CONFIG_H
+
+#include <configs/x86-common.h>
+#include <configs/x86-chromebook.h>
+
+#define CONFIG_ENV_SECT_SIZE		0x1000
+#define CONFIG_ENV_OFFSET		0x003f8000
+
+#endif	/* __CONFIG_H */