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/dts/efi.dts

@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2015 Google, Inc
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+/dts-v1/;
+
+/include/ "skeleton.dtsi"
+/include/ "tsc_timer.dtsi"
+
+/ {
+	model = "EFI";
+	compatible = "efi,app";
+
+	chosen {
+		stdout-path = &serial;
+	};
+
+	tsc-timer {
+		clock-frequency = <1000000000>;
+	};
+
+	serial: serial {
+		compatible = "efi,uart";
+	};
+};