ALSA: usb-audio: Create a registration quirk for Kingston HyperX Amp (0951:16d8)

Create a quirk that allows special processing and/or
skipping the call to snd_card_register.

For HyperX AMP, which uses two interfaces, but only has
a capture stream in the second, this allows the capture
stream to merge with the first PCM.

Signed-off-by: Chris Wulff <crwulff@gmail.com>
Link: https://lore.kernel.org/r/20200314165449.4086-3-crwulff@gmail.com


Signed-off-by: Takashi Iwai <tiwai@suse.de>