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/board/bachmann/ot1200/Makefile

@@ -0,0 +1,13 @@
+#
+# Copyright (C) 2012-2013, Guennadi Liakhovetski <lg@denx.de>
+# (C) Copyright 2012-2013 Freescale Semiconductor, Inc.
+# Copyright (C) 2013, Boundary Devices <info@boundarydevices.com>
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+ifdef CONFIG_SPL_BUILD
+obj-y  := ot1200.o ot1200_spl.o
+else
+obj-y  := ot1200.o
+endif