ALSA: hda/realtek - Add headset Mic support for Lenovo ALC897 platform

Lenovo ALC897 platform had headset Mic.
This patch enable supported headset Mic.

Signed-off-by: Kailang Yang <kailang@realtek.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/baab2c2536cb4cc18677a862c6f6d840@realtek.com


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