title: multimedia module cannot be found in Qt for android
body: <p>I use <code>MediaPlayer</code> qml type to play a music.I just put one single qml file for this project.And It runs perfect on windows.</p>
  
  <p>When I build it an android. Debug says <code>module "QtMultimedia" plugin "declarative_multimedia" not found</code> for Release and <code>D/MediaPlayer(15621): Couldn't open file on client side, trying server side</code> for Debug version.</p>
  
  <p>I have add <code>QT += multimedia</code> in .pro file and it has network access privilege.</p>
  
  <p>I use <code>Desktop Qt 5.2.0 MinGW 32bit</code> and <code>Android for armeabi-v7a (GCC 4.8, Qt 5.2.0)</code>.</p>
  
  <p>So is there anything I missed ?</p>