AbsVol: boost attenuation of the non driving abs vol streams

In order to avoid the double attenuation subtract when playing on
absolute volume devices the attenuation which is already applied by the
absolute volume controller.

Flag: com.android.media.audio.abs_volume_index_fix
Test: logs manual - adb shell setprop log.tag.APM_AudioPolicyManager V
Bug: 340693050
Change-Id: I0c38981565e8d14bf13ac3cd7e26b0edd5e111f6