[chirp_devel] Edge test doesn't match input validation

Recent changes to the TH-D72 driver cause the Edges test to fail. I looked into it and found an inconsistency between the edge test and all the other valid_bands logic in Chirp. The issue is described in this bug report:

http://chirp.danplanet.com/issues/4689

I tried fixing the test by subtracting the minimum step size from the upper bound, since Chirp's input logic requires a frequency to be less than the upper bound to be valid. This causes a number of tests to fail because the drivers don't specify RadioFeatures.valid_tuning_steps. If this approach is valid, those drivers will need to be fixed. At least the TH-D72 test passes. ;-)

Comments?

Tom