bta_hh: Change bus_type to BUS_USB for USB HCI

* Bluetooth input devices have bus_type BUS_USB with USB HCI

Change-Id: Ifecfbfbc76b35bc46c7aef512f5d777794206f43
Signed-off-by: zombah <zombah@gmail.com>
Merge "bta_hh: Change bus_type to BUS_USB for USB HCI" into cm-10.2