Adding new fusion sensor for single flow

Adding new fusion sensor for single flow

- Adding new fusion sensor which executes orientation_filter only once
for all virtual sensors.
- Generates multiple events for orientation sensor, rv sensor, gaming_rv sensor
and geomagnetic_rv sensor based on event type registration
- Will work in complementary fashion to virtual sensors orientation, rv, gaming_rv and geomagnetic_rv
- maintains minimum operation interval.
- Sends only fusion events that are registered by applications

Change-Id: I1dfecc545a0f25647e7ec299c5f0a2bae05e6456