* [fix] Airspeed data different from airspeed state
* Update conf/modules/airspeed_ms45xx_i2c.xml
* [ms45xx] do not set state_speed but send to <air_data>, downlink now via telemetry.xml (no more sync send)
- removed airspeed_scale
- true airspeed (TAS) factor calculated from pressure and temp
- if that is not available, tas_factor can be set manually (and could be used to replace airspeed_scale