ALSA: usb-audio: Add native DSD support for Pro-Ject Pre Box S2 Digital

ALSA: usb-audio: Add native DSD support for Pro-Ject Pre Box S2 Digital

BugLink: http://bugs.launchpad.net/bugs/1731951
commit 9bb201a5d5acc733943e8af7151cceab9d976a69 upstream.

Add native DSD support quirk for Pro-Ject Pre Box S2 Digital USB id
2772:0230.

Signed-off-by: Jussi Laako <jussi@sonarnerd.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>