Eliminate static variables in mag drivers
AK8975 and HMC5883l driver cleanup
replace magic numbers with definitions
Switched AK8963/Ak8975 to 16 bit mode
Update Mag gain calculations to use integer varables (ledvinap
recomendation)
Update interrupt handling for HMC5883L
Reschedule compass task only if slave mode is realy active
Change bustye definitions to an enumeration set
Fix dispatch functions and remove redundant dispatch functions from Baro
and Mag drivers
Fix unittest
Note: Likely there will be a clash with DMA driven OSD and the VTX.
There is no support in the code to disable OSD updates prior to changing
VTX channel.