sensors/FIR: Support buses with multiple devices.
sensors/FIR: Support buses with multiple devices.

* Fixes #1584

iabdalkader/openmv,kwagyeman/openmv,kwagyeman/openmv,iabdalkader/openmv,iabdalkader/openmv,openmv/openmv,kwagyeman/openmv,openmv/openmv,iabdalkader/openmv,openmv/openmv,openmv/openmv,kwagyeman/openmv