Added Peaberry V1 and V2 models

On the Peaberry forum, we have a thread with some hamlib patches for the
Peaberry SDR (a softrock-like transceiver). Both version 1 and version 2
have been implemented and tested.

There are two patches: the first one, made by me (ON8VQ) adds support
for the two radio's, and the second one, made by R2AEE, fixes the tuning
(using PICUSB commands instead of AVRUSB).

The patches are available here:
http://ae9rb.com/forum/viewtopic.php?f=4&t=166

Signed-off-by: Nate Bargmann <n0nb@n0nb.us>