ALSA: hda/realtek - Add quirk for the bass speaker on Lenovo Yoga X1 7th gen

Add quirk to ALC285_FIXUP_SPEAKER2_TO_DAC1, which is the same fixup
applied for X1 Carbon 7th gen in commit d2cd795c

 ("ALSA: hda -
fixup for the bass speaker on Lenovo Carbon X1 7th gen").

Signed-off-by: Kailang Yang <kailang@realtek.com>
Reviewed-by: Jaroslav Kysela <perex@perex.cz>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>