Dirac HD support

Set dsp.dirac.enable=true in system props to enable

Set dsp.compression.enable=false to disable compression library

Set TARGET_ENABLE_DIRAC_AUDIO := true in device Boardconfig to build
needed resources and get the audio_effects.conf from external/libdirac

Change-Id: Ibdbfb00757308171393f946033f894c19de79e6c