ALSA: hda/realtek: Add quirk for ASUS GA402

ASUS GA402 requires a workaround to manage the routing of its 4 speakers
like the other ASUS models. Add a corresponding quirk entry to fix it.

Signed-off-by: Jason Zheng <jasonzheng2004@gmail.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20220313092216.29858-1-jasonzheng2004@gmail.com


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