d2-common : lower camcorder audio volume

Lowering the setting to 87% puts the volume slightly louder then TW.
83-85% is on par w/ TW but voices seem to come through better at 87%

Change-Id: Ic2dfdd793616529f36f31e6a8b7e7ec2dc52cb1f
Merge branch 'cm-10.2' into martincz