ALSA: hda/realtek - Fixed two speaker platform

If system has two speakers and one connect to 0x14 pin, use this
function will disable it.

Fixes: e43252db ("ALSA: hda/realtek - ALC287 I2S speaker platform support")
Signed-off-by: Kailang Yang <kailang@realtek.com>
Link: https://lore.kernel.org/r/e3f2aac3fe6a47079d728a6443358cc2@realtek.com


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