First stab at IOCTL driven offset handling (in PA) for all airspeed sensors. Untested
Minor initialization / formatting change
Reworked airspeed driver to keep most of it abstract
Fixed last few compile errors, ready for testing
Merged
WIP on MEAS bringup, ETS airspeed sensors should be operational
Fixed up ets driver (not tested, WIP on meas driver)
Airspeed sensor driver operational, needs cleanup / testing
First operational test version, provides correct readings (as far as tests were possible)
Fixed stack sizes for airspeed drivers
Merge pull request #343 from PX4/meas_split

ETS airspeed and MEAS airspeed combined driver