More portability & small fixes (#719)
* Use hw_stm32.mk
* Fix bootloader
* Use more common hw_ports.mk filename instead of hw_stm32.mk
* More CPU compatibility for Makefile
* TS_UART_MODE & rename TS_SERIAL_UART_DEVICE->TS_SERIAL_DEVICE
* Move lockAnyContext()/unlockAnyContext() to rfiutil.c
* USE_FATFS
* EFI_LCD
* Less compilation errors
* STATUS_LOGGING_BUFFER_SIZE & SETTINGS_LOGGING_BUFFER_SIZE
* EFI_ALTERNATOR_CONTROL, EFI_SERVO, EFI_DISABLE_CONSOLE_ACTIONS
* #ifndef PWM_PHASE_MAX_COUNT & more flexible GPIO inside portname()
* merge
* EFI_ALTERNATOR_CONTROL, EFI_ELECTRONIC_THROTTLE_BODY
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