LgeLteRIL: allow skipping of initial radio power off message

Change-Id: I30e2f1ee82ee1037772c4a19b797e7d1dbbe9880
LgeLteRIL: properly reset radio on RIL_CONNECTED

* Resets radio on RIL_CONNECTED, but only after the first RIL_CONNECTED
  response.

Change-Id: I9f74877cff0ac01402dcbdbf31266a61ce633d84