ALSA: hda/realtek: Add quirk for Yoga Duet 7 13ITL6 speakers

Lenovo Yoga Duet 7 13ITL6 has Realtek ALC287 and built-in
speakers do not work out of the box. The fix developed for
Yoga 7i 14ITL5 also enables speaker output for this model.

Signed-off-by: Zihao Wang <wzhd@ustc.edu>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20220424084120.74125-1-wzhd@ustc.edu
Signed-off-by: Takashi Iwai <tiwai@suse.de>