* refactor keyboards using ST_STM32F072B_DISCOVERY to use 'MCU = STM32F072'
* refactor keyboards using GENERIC_STM32_F042X6 to use 'MCU = STM32F042'
* refactor keyboards using GENERIC_STM32_F103 to use 'MCU = STM32F103'
* VIA Refactor
* Remove old code
* review changes
* review changes
* Fix cannonkeys/satisfaction75/prototype:via build
* Add via.h to quantum.h
* Move backlight init to after backlight config load
* Merge branch 'master' into via_refactor_pr
* Update user's rules.mk to new way of enabling VIA
* Added id_switch_matrix_state
* Review changes