[2/2] Settings: Driving Mode

Add option Driving mode

this will speak for:

Allow changing Volume TTS
Incoming call
new Message from
read new message
battery fully charged
charging start
charging stop
Clock speak after screen turn on
Date speak after screen turn on
Which app allowed to speak for Notifications
Speak for Music track title (thanks Utkarsh for idea :D)
fix audio focus while music playing
add less speak notification

NOTE: Requires TTS engine installed

how to use:
goto More... (below INTERFACE) => Driving Mode
Enable Drive mode then choose what you want to speak while driving :D

Drive mode will automatically check for TTS engine installed or not

have fun ^.^

Change-Id: I4711d026ca807c445de8115b60f7c59d59f1f179