[AVR][4.2] Add suppotr for new AVR devices.

[Gerald Pfeifer]

On Fri, 19 May 2006, Joerg Wunsch wrote:
>> It is invalid because that doesn't follow our coding convention.
> Where to find them?

http://gcc.gnu.org/codingconventions.html is our canonical page where we
try to describe all specifics.

Gerald