This is another step to isolate time from the system.

This is a step towards isolating time from the system.

 - px4_add_module now requires MAIN
 - px4_add_library doesn't automatically link

This is needed so that temperature compensation reads in the updated values
and publishes the updated sensor_correction topic.

This is not needed, as s is an uORB instance and accel_offset_0
contains data from uORB instance 0.

if compensation enabled, scale & offsets for the drivers should be reset,
but actually only the params were reset and accel_scale was still applied
to the driver via ioctl.

Signed-off-by: Roman <bapstroman@gmail.com>

The reason for this change is that RPi2 and RPi3 are compatible, and
hopefully all differences coming up can be resolved without ifdefs but
at runtime.

Added mag support to the DriverFramework mpu9250 driver.  Shortened parameter names for legacy drivers.  Added temporary ifdef's in the calibration code for Snapdragon Flight builds.

Signed-off-by: jwilson <jwilson@qti.qualcomm.com>

The mavlink_log API changes lead to changes in all drivers/modules using
it.

This fixes some regressions on the calibration using NuttX, especially
considering the PRIME param and the device ids.

The PRIME param got lost on the way of the refactoring.