* Set bootloader to stm32-dfu for STM32F303
* Set bootloader to stm32-dfu for STM32F0x2
* Set bootloader to stm32-dfu for STM32F4x1
* Set bootloader to stm32duino for sowbug
* Delete redundant bootloader_defs headers
* Add some missing MCU name comments
* Move APM32 dfu-suffix overrides underneath bootloader
* Remove redundant STM32_BOOTLOADER_ADDRESS defines/rules
* Allow APM32 MCUs on certain CannonKeys PCBs
* another one
* Update DFU suffix args
* missed one
* Apply suggestions from code review
Co-authored-by: Joel Challis <git@zvecr.com>
Co-authored-by: Joel Challis <git@zvecr.com>