Use new configuration API, replace callback enable/disable with
interrupt enable/disable, and set active level in devicetree source.
Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
Add a sample for the MPU6050 that demonstrates on-demand and triggered
display of all sensor data.
Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>