[TIMOB-17179] Android: Add support for Audio Equalizer Class

Feature Request

To expose in Titanium EQ settings in Android

Class Overview

An Equalizer is used to alter the frequency response of a particular music source or of the main output mix. An application creates an Equalizer object to instantiate and control an Equalizer engine in the audio framework. The application can either simply use predefined presets or have a more precise control of the gain in each frequency band controlled by the equalizer.

Android docs

http://developer.android.com/reference/android/media/audiofx/Equalizer.html