Merge "cherrypick from hc-mr2 Change-Id: Iab11fd9bf007d2e2dcfd7b26a6b8539ed35cf60e"

UsbManager manager = (UsbManager) getSystemService(Context.USB_SERVICE);

...  

HashMap<String, UsbDevice> deviceList = manager.getDeviceList();

Iterator<UsbDevice> deviceIterator  = deviceList.values().iterator();

while(deviceIterator.hasNext()){

    UsbDevice device = deviceIterator.next();

    // your code

}

UsbDevice device = deviceList.get("deviceName");

</pre>

  <p>If desired, you can also just obtain an iterator from the hash map and process each device one