This Lenovo ThinkCentre AIO also uses Line2 as mic mute button and
uses GPIO2 to control the mic mute led, so applying this quirk can
make both the button and led work.

Cc: stable@vger.kernel.org
BugLink: https://bugs.launchpad.net/bugs/1555912Signed-off-by: Hui Wang <hui.wang@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>