adb: after `adb root`, wait for the device in any state.
am: 9ea7795

* commit '9ea7795d38e92d8d01135fdfe7e9a0b74a65e5c8':
  adb: after `adb root`, wait for the device in any state.

Change-Id: I0adaa15e7c055e1d79e0dd65e3e3888d8f575444