* Disable almost all ChibiOS subsystems.
* Modify ChibiOS config updater script to fixup mcuconf include, use develop as base instead of master.
* Add default early-init bootloader to F042/F072.
* Back to 100k freq.
* Initial work for consolidation of board files and default ChibiOS configs.
* Migrate F401/F411 black pills for testing.
* Add early init bootloader jump flag.
* Add support for I2C in order to use i2c_scanner keymap.
* Add F401/F411 HSE bypass to get things booting.
* Exempt "hooked" ChibiOS conf files from updater script.
* Fix up ordering for bootloader_defs file check.
* Match previous $(KEYBOARD_PATHS) value for Proton-C, updated for all board configs.
