The header file was not in source with the source file.

This moves the mavlink_log interface from ioctl to uORB and enables the
mavlink statusmessage output for Snapdragon. The API changes will lead
to changes in all modules that are using it.

This brings better support for device ids.

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.

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

Instead of using a uORB topic with the calibration values published in
sensors and consumed by the DriverFramework driver wrappers, let's just
use the the params directly. This is quite a rough change and needs
definitely some cleanup and refactoring.

E.g. instead of defining a gyro_scale struct in drv_gyro.h, use the
gyro_calibration message.

Trailing whitespace all over.

This adds uORB messages to publish calibration data by sensors which is
then consumed by the sensors. Currently this is only used on Snapdragon
and guarded by QURT ifdefs.

This reverts commit 213cdf1a.

Raising the stream rate of param values had the nice effect that
receiving the params became really quick. However, on the downside it
set all other streams pretty slow. This needs to be fixed differently.

This was in there by accident.

There is no calibration config needed anymore.

The calibration config is no longer needed.

The recent workaround to flag all params as used did not include
param_for_used_index(). However, this function got used in the case if
one param had not been received by QGC and was requested by its index.

-closes #4040