* Enable `.fm_filters` in `IC705_priv_caps`
* `icom_get_mode_without_data()`: activate FM filter selection code if `RIG_IS_IC705`
* `icom2rig_mode()`: activate FM filter fixed width code if `RIG_IS_IC705`
* TODO: cases in WFM should be solved independently
* `icom2rig_mode()`: handle FM and WFM separately and correctly at least for IC-705, no changes for IC-7300 and IC-9700
* `icom_get_mode_without_data()`: add WFM to the code assuming that values from `icom2rig_mode()` is correct
* icom.c: A partial rollback for a395b91be6
* The workaround to use `icom_set_mode_without_data()` is not necessary
* The later experiments showed CI-V command 0x26 worked OK too for WFM
* Add WFM freq to ic705_caps.filters
* Fix icom_set_mode_x26() FM behavior
`icom_set_mode_x26()` did not pass the correct command value
for FM or PKTFM modes when width is set to
`RIG_PASSBAND_NORMAL` (i.e., 0 (zero)).
With this source code change,
the command value `buf[2]` is forcefully set to 1
when `RIG_PASSBAND_NORMAL` or `RIG_PASSBAND_NOCHANGE` are
passed to the parameter `width`.
This fix solves the bug for IC-705 with rigctl when
entering the command `M FM 0` after `M WFM 0` *did not*
change the mode properly to (narrow) FM.
12cc40f4f7