This is a bit more difficult than just reassigning pins as the usage
of the timers has changed to the point of using 16 bit timers where 32 bit
timers would have been ideal. This makes the use of the prescaler necessary,
and we need to cope with a different prescaler value being used on different
timers.
Recalibrate the radio, as the timings have changed.
And, it seems a couple of channels are now swapped with the new radio. Or
rather, unswapped. So fix the channel map to match.
