selinux: add policies

Add policies for "su", and more...

Change-Id: I186a14337b90f6292c8e01cbe2c7376f907fa596
audio: decrease earpiece volume

Change-Id: I18e584eb0b0dff45b45da00a53366ddbf1de56be
Merge remote-tracking branch 'upstream/cm-10.2' into cm-10.2-mods