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/test/common.sh

@@ -0,0 +1,20 @@
+#!/bin/sh
+
+OUTPUT_DIR=sandbox
+
+fail() {
+	echo "Test failed: $1"
+	if [ -n ${tmp} ]; then
+		rm ${tmp}
+	fi
+	exit 1
+}
+
+build_uboot() {
+	echo "Build sandbox"
+	OPTS="O=${OUTPUT_DIR} $1"
+	NUM_CPUS=$(grep -c processor /proc/cpuinfo)
+	echo ${OPTS}
+	make ${OPTS} sandbox_config
+	make ${OPTS} -s -j${NUM_CPUS}
+}