Input: elantech - support new ICs types for version 4

commit 810aa091 upstream.

This change allows the driver to recognize newer Elantech touchpads.
Signed-off-by: Yi ju Hong <sam.hung@emc.com.tw>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
[ kamal: backport to 3.13-stable: picked up case 9 also ]
Signed-off-by: Kamal Mostafa <kamal@canonical.com>

drivers/input/mouse/elantech.c

@@ -1396,6 +1396,9 @@ static int elantech_set_properties(struct elantech_data *etd)
 		case 6:
 		case 7:
 		case 8:
+		case 9:
+		case 10:
+		case 13:
 			etd->hw_version = 4;
 			break;
 		default: