fw-AT-START-F435

An attempt to blink an LED on AT-START-F435 board using ChibiOS+rusEFI codebase

https://github.com/rusefi/rusefi/tree/master/firmware/config/boards/cypress and https://github.com/rusefi/rusefi/tree/master/firmware/config/boards/kinetis are examples of custom platform for ChibiOS
only difference with above mentioned cypress and kinetis is here we are trying to build on top of rusEFI as a submodule
see 'ext/AT32F435_437_Firmware_Library' for Artery firmware library

Current state: just some skeleton progress nothing else