sensor: paa3905: Add streaming mode

Working through either Motion detection or through Data-Ready.

Data-ready has a back-up timer to trigger worst case, if no motion
occurs within 10X data-rate.

On every streaming event, the driver checks for the sensor health, and
attempts recoverying its state if it detects issues.

Signed-off-by: Luis Ubieda <luisf@croxel.com>