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/board/freescale/common/ics307_clk.h

@@ -0,0 +1,16 @@
+/*
+ * Copyright 2010-2011 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+#ifndef __ICS_CLK_H_
+#define __ICS_CLK_H_	1
+
+#ifndef __ASSEMBLY__
+
+extern unsigned long get_board_sys_clk(void);
+extern unsigned long get_board_ddr_clk(void);
+extern unsigned long ics307_sysclk_calculator(unsigned long out_freq);
+#endif
+
+#endif	/* __ICS_CLK_H_ */