~ruther/avr-device

ref: 694f88b42ee7d27e6d83c07ad8189dbeb19736f0 avr-device/patch/common/tiny d---------
9c2e7ecd — Andrew Dona-Couch 5 years ago 
Extract common EXINT patch from tiny84/85
f64c737b — Andrew Dona-Couch 5 years ago 
Extract common USI patch from tiny84/85