* Rename EFI_INTERNAL_FLASH to EFI_STORAGE_INT_FLASH
This define enables use of RE custom flash driver for storing
settings to internal flash.
* at_start_f435: enable MFS for settings storing in internal flash
* MRE: fix special build
* kinetis: fix flash_int.cpp vs flash_int.c mess
* at32: allow allowFlashWhileRunning()
* flash_main: supress warning
* at32_common.cpp: MCU type detection helper
* sayHello(): tick rate is CH_CFG_ST_FREQUENCY
* eficonsole: do isStm32F42x() check for STM32 only
* sayHello(): more info about AT32
* Update ChibiOS
* eficonsole: typo