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/x86/include/asm/init_helpers.h

@@ -0,0 +1,15 @@
+/*
+ * (C) Copyright 2011
+ * Graeme Russ, <graeme.russ@gmail.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef _INIT_HELPERS_H_
+#define _INIT_HELPERS_H_
+
+int init_cache_f_r(void);
+int init_bd_struct_r(void);
+int init_func_spi(void);
+
+#endif	/* !_INIT_HELPERS_H_ */