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/samsung/smdkv310/Makefile

@@ -0,0 +1,15 @@
+#
+# Copyright (C) 2011 Samsung Electronics
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+ifdef CONFIG_SPL_BUILD
+# necessary to create built-in.o
+obj- := __dummy__.o
+
+hostprogs-y := tools/mksmdkv310spl
+always := $(hostprogs-y)
+else
+obj-y	+= smdkv310.o
+endif