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/gdsys/mpc8308/Makefile

@@ -0,0 +1,10 @@
+#
+# (C) Copyright 2014
+# Dirk Eibach,  Guntermann & Drunck GmbH, eibach@gdsys.de
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+obj-y := mpc8308.o sdram.o
+obj-$(CONFIG_HRCON) += hrcon.o
+obj-$(CONFIG_STRIDER) += strider.o