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/drivers/input/Kconfig

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+config DM_KEYBOARD
+	bool "Enable driver model keyboard support"
+	depends on DM
+	help
+	  This adds a uclass for keyboards and implements keyboard support
+	  using driver model. The API is implemented by keyboard.h and
+	  includes methods to start/stop the device, check for available
+	  input and update LEDs if the keyboard has them.
+
+config CROS_EC_KEYB
+	bool "Enable Chrome OS EC keyboard support"
+	help
+	  Most ARM Chromebooks use an EC to provide access to the keyboard.
+	  Messages are used to request key scans from the EC and these are
+	  then decoded into keys by this driver.
+
+config I8042_KEYB
+	bool "Enable Intel i8042 keyboard support"
+	depends on DM_KEYBOARD
+	help
+	  This adds a driver for the i8042 keyboard controller, allowing the
+	  keyboard to be used on devices which support this controller. The
+	  driver handles English and German keyboards - set the environment
+	  variable 'keymap' to "de" to select German. Keyboard repeat is
+	  handled by the keyboard itself.