This patch adds two gr-osmosdr blocks that can be used with the SDR transceiver
application available from the Red Pitaya application marketplace:
http://bazaar.redpitaya.com
These new source and sink blocks are based on the file block with some pieces
borrowed from the rtl_tcp block.
More details about Red Pitaya SDR transceiver can be found at:
http://pavel-demin.github.io/red-pitaya-notes/sdr-transceiver
Usage example:
osmocom_fft -a "redpitaya=192.168.1.100:1001"
Signed-off-by: Pavel Demin <pavel.demin@uclouvain.be>