Add supported for Lenovo ThinkPad Headset Button.
Thinkpad P1 Gen 3 (0x22c1)
Thinkpad X1 Extreme Gen 3 (0x22c2)
Signed-off-by: Kailang Yang <kailang@realtek.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/f39b11d00340408ca2ed2df9b4fc2a09@realtek.comSigned-off-by: Takashi Iwai <tiwai@suse.de>