* solenoid: remove two functions that do nothing.
These functions modify the argument, and so they do nothing.
Note: versions of these functions exist in mtdjr's user folder,
however to core solenoid support and mtdjr user-specific solenoid
support are exclusive (only one can be used at a time).
So removing these confusing functions does no harm.
* solenoid: bugfix: don't allow dwell time to go 1ms below minimum time.
The previous code allowed dwell time to go 1ms below the configured minimum.
This change corrects it.
* solenoid: bugfix: when incrementing above maximum dwell time, jump back to minimum, not to 1
The previous code used to jump back to 1, which might be way under the configured minimum setting.
* solenoid: bugfix: on startup actually use the eeprom-stored dwell-time
This is because the dwell time is stored in two variables.
* solenoid: bugfix: on haptic_reset, actually use the newly set default dwell time.
This is needed because dwell time is configured in two variables.
* solenoid: on HPT_RST set buzz to a default value
* solenoid: buzz: reworked to make more configurable. Previous behaviour maintained.
* solenoid: documentation: clarify meaning of dwell time
* solenoid: add feature SOLENOID_DWELL_STEP_SIZE
* solenoid: documentation: added note about the precision of the solenoid time settings
* haptic: Correctly call haptic_reset when eeprom is corrupt.
* haptic: improve what happens if haptic is enabled without erasing eeprom
* haptic: improve what happens if solenoid is enabled without erasing eeprom
* drivers/haptic: fix compilation issue, when haptic is enabled, but solenoid isn't
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