ALSA: usb-audio: Add Pioneer DJ DJM-900NXS2 support

[Takashi Iwai]

On Mon, 01 Jun 2020 12:22:24 +0200,
Dmitry Panchenko | d-Systems wrote:
> 
> Pioneer DJ DJM-900NXS2 is a widely used DJ mixer with 2 audio USB
> interfaces. Both have a MIDI controller, 10 playback and 12 capture
> channels. Audio endpoints are vendor-specific and 3 files need to be
> patched. All playback and capture channels work fine with all supported
> sample rates (44.1k, 48k, 96k). Patches are attached.
> 
> Signed-off-by: Dmitry Panchenko <dmitry at d-systems.ee>

Applied now.

But, at the next time, please keep the following in mind:
- Make a patch applicable with -p1 option, i.e. diff between
  a/sound/usb and b/sound/usb

- Align both From and Signed-off-by name and address consistently

I fixed manually at this time, so no resubmission needed.


thanks,

Takashi