Fix audio encoding issue 

Java byte array wrongly cast to an array of short int's.
General cleanup and add audio_policy.conf.

Change-Id: I8a1f95f1885fe74ae10d64ea4247b70eed13757a
Display VM IP info on console

The serial console is often a pain to get at (if not impossible to) on
certain virtualization platforms. This patch prints the network iface
info to the graphical console (/dev/tty0) and switches off the kernel's
automatic console blanking (since there's no way to wake the console
back up once blanking activates).

The full dmesg log and interactive shell is left on the first serial
port, /dev/ttyS0.

Change-Id: I7e564297b58fc02ac4fd948c40300decd98772af
Merge master into svmp-2.x

* svmp/master:
  Display VM IP info on console
  Fix audio encoding issue