commit 705b65f107470499442240ff7afee5021a7002a6 upstream.

The Acer AIO Aspire C24-860 with ALC286 can't detect the headset
microphone. Just like another Acer AIO U27-880, it needs a different
pin value for 0x18 and the headset fixup to make headset mic work.
Signed-off-by: NJian-Hong Pan <jian-hong@endlessm.com>
Signed-off-by: NDaniel Drake <drake@endlessm.com>
Signed-off-by: NChris Chiu <chiu@endlessm.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>