[REQUEST] Implement missing `none` DRC preset with binary edit.

[pcroland]

[pcroland]

https://forum.doom9.org/showpost.php?p=1973074&postcount=144

[pcroland]

You can use -31 for DD, DDP and TrueHD aswell. The on flag is only for TrueHD 2.0, don't know why. Dolby doesn't plan to add the missing none preset.

[pcroland]

dialnorm -31 is not the same as a disabled drc.