Merge changes I12d46493,I0ed00441,I55e5dc5a,If61296ff into oc-mr1-dev

* changes:
  adb: add lock to remove_socket.
  Revert "adb: fix deadlock between transport_unref and usb_close."
  adb: allow selection of a specific transport.
  adb: fix deadlock in kick_all_transports.