Transceiver: Move calculation of normalized values (rssiOffset) to pullRadioVector()

That's where all the filling logic happens, while in driveReceiveFIFO we
mostly want to take the burst, generate a message and sent it over the
socket.
In pullRadioVector this way we always provide normalized values based on
user configuration (VTY rssi-offset).

Related: OS#4006
Change-Id: I1ee28daf21dc287bec564d45d58086d63655c0f6
2 files changed