UsbService: Refactor USB host and device support into two separate classes

Host support is in UsbHostManager, device support is in UsbDeviceManager

Renamed UsbDeviceSettingsManager to UsbSettingsManager

Change-Id: Ib76e72957c233fa7f08f454d4d9a2a1da6368cc7
Signed-off-by: Mike Lockwood <lockwood@android.com>
8 files changed