Support all cross tone FT857/897 radios capabilities
FT857 (all sub model)
I read the instructions above:
FT857 radios can do cross tone (and dtcs as well) with different code for RX and TX.
We have to add support in the radio driver for:
- "tone sql" and "dtcs sql" column
- "Tone->Tone", "DTCS-DTCS" as cross modes