Use Frame Processor Specific Channel-Plane Map

[aeoranday]

The TDEEthFrameProcessor and WIBEthFrameProcessor both make use of the complete channel map provided by detchannelmaps, but an individual processor will only use a static 64 channels from this much larger map. It will be useful for each processor to generate it's own channel-to-plane map during conf, where the processor becomes aware of the geo_id that is relevant to make the map.