Input: elantech - add new icbody type 15

The touchpad of Lenovo Thinkpad L480 reports it's version as 15.

Cc: stable@vger.kernel.org
Signed-off-by: Aaron Ma <aaron.ma@canonical.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

BugLink: https://bugs.launchpad.net/bugs/1733605

(cherry-picked from commit 10d90030)
Signed-off-by: Aaron Ma <aaron.ma@canonical.com>
Acked-by: Po-Hsu Lin <po-hsu.lin@canonical.com>
Acked-by: Hui Wang <hui.wang@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>

drivers/input/mouse/elantech.c

@@ -1613,7 +1613,7 @@ static int elantech_set_properties(struct elantech_data *etd)
 		case 5:
 			etd->hw_version = 3;
 			break;
-		case 6 ... 14:
+		case 6 ... 15:
 			etd->hw_version = 4;
 			break;
 		default: