ALSA: snd-usb: Playback Design: use usb_set_inferface quirk from more locations

It turns out the devices from Playback Design need the delay quirk
after usb_set_interface from clocks.c as well. Make it a proper
quirks function and factor out the code to quirks.c.

Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --cc sound/usb/clock.c
Simple merge

diff --cc sound/usb/pcm.c
Simple merge

diff --cc sound/usb/quirks.c
Simple merge

diff --cc sound/usb/quirks.h
Simple merge