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/include/fsl_wdog.h

@@ -0,0 +1,19 @@
+/*
+ * (C) Copyright 2015 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+struct watchdog_regs {
+	u16	wcr;	/* Control */
+	u16	wsr;	/* Service */
+	u16	wrsr;	/* Reset Status */
+};
+
+#define WCR_WDZST	0x01
+#define WCR_WDBG	0x02
+#define WCR_WDE		0x04
+#define WCR_WDT		0x08
+#define WCR_SRS		0x10
+#define SET_WCR_WT(x)	(x << 8)
+#define WCR_WT_MSK	SET_WCR_WT(0xFF)