GEX port to STM32F072. This is currently the main port.

Ondřej Hruška 8e85d44e59 moved platform specific stuff from core		7 years ago
..
main.c	fixes for oscillator fallback	7 years ago
platform_resources.c	moved platform specific stuff from core	7 years ago
stm32f0xx_hal_msp.c	added stuff	7 years ago
system_stm32f0xx.c	added stuff	7 years ago