ALSA: hda/realtek: Update ALC256 depop procedure

[ Upstream commit cc3d0b5d ]

Old procedure has a chance to meet Headphone no output.

Fixes: 4a219ef8 ("ALSA: hda/realtek - Add ALC256 HP depop function")
Signed-off-by: Kailang Yang <kailang@realtek.com>
Link: https://lore.kernel.org/463c5f93715d4714967041a0a8cec28e@realtek.com


Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>