Transceiver52M: Add vectorized radio burst capability

This patch allows multiple signalVectors to be stored within
a single radioVector object. The motivation is to provide
a facility for diversity and/or MIMO burst handling. When
no channel value is specified, single channel bevhaviour
is maintained.

Signed-off-by: Thomas Tsou <tom@tsou.cc>
diff --git a/Transceiver52M/Transceiver.h b/Transceiver52M/Transceiver.h
index d1a6ec9..671603e 100644
--- a/Transceiver52M/Transceiver.h
+++ b/Transceiver52M/Transceiver.h
@@ -118,7 +118,7 @@
   noiseVector mNoises;  ///< Vector holding running noise measurements
 
   /** modulate and add a burst to the transmit queue */
-  void addRadioVector(size_t chan, BitVector &burst,
+  void addRadioVector(size_t chan, BitVector &bits,
                       int RSSI, GSM::Time &wTime);
 
   /** Push modulated burst into transmit FIFO corresponding to a particular timestamp */