ALSA: usb-audio: fix BOSS ME-25 MIDI regression

ALSA: usb-audio: fix BOSS ME-25 MIDI regression

commit 53da5ebfef66ea6e478ad9c6add3781472b79475 upstream.

The BOSS ME-25 turns out not to have any useful descriptors in its MIDI
interface, so its needs a quirk entry after all.

Reported-and-tested-by: Kees van Veen <kees.vanveen@gmail.com>
Fixes: 8e5ced83dd1c ("ALSA: usb-audio: remove superfluous Roland quirks")
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>