Avalon Nano: Add support Avalon Nano usb miner
Implement support for mining.suggest_difficulty
Merge branch 'master' of github.com:ckolivas/cgminer
The 2nd read never gets anything on ava2 so remove it entirely and just return an error if we are out of sync
Don't set default fan to max on hashratio
Merge pull request #645 from jimmysitu/master

Avalon Nano: Add support Avalon Nano usb miner
Allow arbitrary clamping of lower device diffs for slow controllers by driver
Set min_diff to 1
Merge fe132ce1c0f766575f82e5c848d683cff1ef466a from ck