ALSA: hda/realtek - Fixed Dell AIO wrong sound tone

ALSA: hda/realtek - Fixed Dell AIO wrong sound tone

This platform only had one audio jack.
If it plugged speaker then replug with speaker or headset, the sound
tone will change to abnormal.
Headset Mic also can't record when this issue was happen.

[ Added a short comment about the COEF by tiwai ]

Signed-off-by: Kailang Yang <kailang@realtek.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/593c777dcfef4546aa050e105b8e53b5@realtek.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>