hal: Add support for turning fluence on/off

- To turn on/off fluence we need to change the build prop
file and changes will take effect after reboot. There is no
option to turn it on/off without rebooting the target.
- Add set_params support to turn it on and off.
An option is given to user to select the dualmic fluence
based on which set_parms is invoked.

Change-Id: I51d580af820d8e0b1bd1384c941ffba3f96813ca
CRs-Fixed: 605087