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/microblaze/include/asm/gpio.h

@@ -0,0 +1,14 @@
+#ifndef _ASM_MICROBLAZE_GPIO_H_
+#define _ASM_MICROBLAZE_GPIO_H_
+
+#include <asm-generic/gpio.h>
+
+/* Allocation functions */
+extern int gpio_alloc_dual(u32 baseaddr, const char *name, u32 gpio_no0,
+			   u32 gpio_no1);
+extern int gpio_alloc(u32 baseaddr, const char *name, u32 gpio_no);
+
+#define gpio_status()	gpio_info()
+extern void gpio_info(void);
+
+#endif