Support Mic Mute LED for ThinkCentre M series.

Signed-off-by: Kailang Yang <kailang@realtek.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/c211a2702f1f411e86bd7420d7eebc03@realtek.com


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