In search staion test, we get tune status event for every station
found and fetch the parameter values for that station. For that we post
runnable to handler to execute. On event received, we also send message to
process message handler and not able to process message as runnable is
already waiting and this leads to ANR. So now on tune complete, we
create thread for the runnable instead of handler.

Change-Id: I48795102965ff70a8a80180b6e2f9d253db99eef