api,dbus: rename `AllowedBands' to just `Bands'

ModemManager will load:
  1) The list of supported bands. Note that this doesn't mean that any possible
     combination of bands is supported, as modems may support only specific
     combinations, but at least gives a rough idea of what the modem is capable
     of handling.

  2) The list of CURRENT bands. There is no such "Allowed" bands, as we do with
     modes, modems will have a specific set of bands being currently used, which
     will be reported in the `Bands' property.

If the modem allows modifying the list of bands to use, this can be done with
the `SetBands()' method. If the modem doesn't support using a specific
combination of bands, this method will report an error.

0 files changed, 0 insertions, 0 deletions