Use the data which has been filtered by the integrator for the
instantanous values instead of only 1 out of 32 samples.

This is to better support estimators and modules other than ekf2 which
uses the integrated gyro/accel values anyway.

Instead of only being able to get the integral and its integration time,
it can also be handy to get the integral divided/differentiated by the
the integration time. This data is then just filtered by the integrator.

USEC2TICK was not found.