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/powerpc/include/asm/arch-mpc85xx/gpio.h

@@ -0,0 +1,21 @@
+/*
+ * Copyright 2014 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+/*
+ * Dummy header file to enable CONFIG_OF_CONTROL.
+ * If CONFIG_OF_CONTROL is enabled, lib/fdtdec.c is compiled.
+ * It includes <asm/arch/gpio.h> via <asm/gpio.h>, so those SoCs that enable
+ * OF_CONTROL must have arch/gpio.h.
+ */
+
+#ifndef __ASM_ARCH_MX85XX_GPIO_H
+#define __ASM_ARCH_MX85XX_GPIO_H
+
+#ifndef CONFIG_MPC85XX_GPIO
+#include <asm/mpc85xx_gpio.h>
+#endif
+
+#endif