[Bug 42414] The Witcher 3 intro videos don't play

https://bugs.winehq.org/show_bug.cgi?id=42414

--- Comment #12 from Andrew Eikum  ---
>    What    |Removed     |Added
>
> Staged patchset|            |https://github.com/wine-com
>                |            |pholio/wine-staging/tree/ma
>                |            |ster/patches/xaudio2-get_al
>                |            |_format
>          Status|UNCONFIRMED |STAGED

This won't work correctly. I think it's better to correctly report that we
don't support this format, than to pretend IEEE float audio is actually PCM.