[PATCH] Input: elantech - enable middle button of touchpad on ThinkPad P72

[Aaron Ma]

Adding 2 new touchpad IDs to support middle button support.

Cc: sta...@vger.kernel.org
Signed-off-by: Aaron Ma <aaron...@canonical.com>
---
 drivers/input/mouse/elantech.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c
index 44f57cf6675b..2d95e8d93cc7 100644
--- a/drivers/input/mouse/elantech.c
+++ b/drivers/input/mouse/elantech.c
@@ -1178,6 +1178,8 @@ static const struct dmi_system_id 
elantech_dmi_has_middle_button[] = {
 static const char * const middle_button_pnp_ids[] = {
        "LEN2131", /* ThinkPad P52 w/ NFC */
        "LEN2132", /* ThinkPad P52 */
+       "LEN2133", /* ThinkPad P72 w/ NFC */
+       "LEN2134", /* ThinkPad P72 */
        NULL
 };
 
-- 
2.17.1