Transceiver52M: Use USRP1 type window for B2xx devices
Transceiver52M: Use USRP1 type window for B2xx devices

B2xx is a USB based device so use the USRP1 based adaptive flow
control window for transmit bursts. This adds additional stability
primarily on ARM platforms.

Signed-off-by: Thomas Tsou <96835dd8bfa718bd6447ccc87af89ae1675daeca@tsou.cc>

pothosware/osmo-trx,telenoobie/osmo-trx,osmocom/osmo-trx,ttsou/osmo-trx,kkroo/osmo-trx,ttsou/osmo-trx,ttsou/osmo-trx,telenoobie/osmo-trx,telenoobie/osmo-trx,ttsou/osmo-trx,pothosware/osmo-trx,osmocom/osmo-trx,telenoobie/osmo-trx,kkroo/osmo-trx,pothosware/osmo-trx,kkroo/osmo-trx,pothosware/osmo-trx,kkroo/osmo-trx,osmocom/osmo-trx,osmocom/osmo-trx