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/snow.h

@@ -0,0 +1,21 @@
+/*
+ * Copyright (C) 2013 Samsung Electronics
+ *
+ * Configuration settings for the SAMSUNG EXYNOS5 Snow board.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef __CONFIG_SNOW_H
+#define __CONFIG_SNOW_H
+
+#include <configs/exynos5250-common.h>
+#include <configs/exynos5-dt-common.h>
+#include <configs/exynos5-common.h>
+
+#define CONFIG_BOARD_COMMON
+
+#define CONFIG_IDENT_STRING		" for snow"
+#define CONFIG_DEFAULT_CONSOLE		"console=ttySAC1,115200n8\0"
+
+#endif	/* __CONFIG_SNOW_H */