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/arch/arm/cpu/armv8/Makefile

@@ -0,0 +1,22 @@
+#
+# (C) Copyright 2000-2003
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+extra-y	:= start.o
+
+obj-y	+= cpu.o
+obj-y	+= generic_timer.o
+obj-y	+= cache_v8.o
+obj-y	+= exceptions.o
+obj-y	+= cache.o
+obj-y	+= tlb.o
+obj-y	+= transition.o
+obj-y	+= fwcall.o
+
+obj-$(CONFIG_FSL_LAYERSCAPE) += fsl-layerscape/
+obj-$(CONFIG_S32V234) += s32v234/
+obj-$(CONFIG_ARCH_ZYNQMP) += zynqmp/
+obj-$(CONFIG_TARGET_HIKEY) += hisilicon/