* Make rgblight_update_dword not update eeprom (we already have
eeconfig_update_rgblight for that).
Make split i2c keyboards transfer active rgblight config rather than
eeprom saved version of rgblight config, enabling runtime changes
that aren't persisted to eeprom.
* prev_level and prev_rgb only store successfully transmitted values
* Clarify the license for files we have signoff on
* Update against the currently signed off files
* Remove unused and not clearly licensed headers
* Replace an #endif I accidentally removed while resolving merge conflicts
