add I2C register map
add I2C register map
add I2C register map
add I2C register map
toolchain: pass vid:pid to dfu-util

Suggested-by: @christianjann
Merge branch 'i2c' of github.com:deanrock/mchck into i2c

Conflicts:
	toolchain/include/mchck.h
toolchain: fix i2c register/enum names and indent
Added missing gpio pin definition