All raspberry pi models are supported. However, the pairing software is currently not currently compiled to run on the raspberry pi.
NOTE - Shameless plug.
The pairing software will absolutely be supported on the raspberry pi again. However, the need for this is not high. Pairing is recommended on another machine anyways, and once finished, you can take your flirc, plug it in the raspberry pi, and it should work with your previously paired remote without the need for any additional software.