[droid] update Android manifest with <uses-feature>

As stated on http://developer.android.com/guide/topics/manifest/uses-feature-element.html we should define what we can use.

* hardware.screen.landscape  should be a required feature i think as portrait mode is kinda useless for us (debatable) 
* android.hardware.type.television "designed for a television user experience."
* android.hardware.touchscreen.multitouch  Changed to multitouch as we support that now
* android.hardware.wifi We can use wi-fi if available

@koying @Montellese 

Edit:
Not sure if we also should add 
* android.hardware.bluetooth
* android.hardware.audio.low_latency