[PATCH 0/4]: ALSA: usb-audio: Add Pioneer DJM-850 support

[Nicolas MURE]

Hello,

This patches serie adds support for the Pioneer DJM-850 mixer. The mixer
has a 24bits (little endian) sound card, which features 4 stereo
channels for capture and 4 stereo channels for playback.
The mixer also has controls to specify the capture source for each
channels, and also a control to set the sample rate (44.1kHz, 48kHz,
96kHz).

Thank you :)

Signed-off-by: Nicolas MURE <nicolas.mure2019 at gmail.com>