Modify Bluetooth Class of Device from Android stack

Adds ability to modify Bluetooth Class of Device from Android stack by
hooking into existing functions to modify adapter properties. This
ensures the hardware HAL bluetooth.h interface does not have to change.

Bug: 36015415
Test: Modified Class of Device using sample app and verified device icon
change when discovering from a remote device.

Change-Id: Ib5f05741480a27431afea882d071ded4a6b1bdb8