Input: elan_i2c - add ASUS EeeBook X205TA special touchpad fw

EeeBook X205TA is yet another ASUS device with a special touchpad
firmware that needs to be accounted for during initialization, or
else the touchpad will go into an invalid state upon suspend/resume.
Adding the appropriate ic_type and product_id check fixes the problem.
Signed-off-by: Matjaz Hegedic <matjaz.hegedic@gmail.com>
Acked-by: KT Liao <kt.liao@emc.com.tw>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/mouse/elan_i2c_core.c

@@ -218,17 +218,19 @@ static int elan_query_product(struct elan_tp_data *data)
 
 static int elan_check_ASUS_special_fw(struct elan_tp_data *data)
 {
-	if (data->ic_type != 0x0E)
-		return false;
-
+	if (data->ic_type == 0x0E) {
 		switch (data->product_id) {
 		case 0x05 ... 0x07:
 		case 0x09:
 		case 0x13:
 			return true;
-	default:
-		return false;
 		}
+	} else if (data->ic_type == 0x08 && data->product_id == 0x26) {
+		/* ASUS EeeBook X205TA */
+		return true;
+	}
+
+	return false;
 }
 
 static int __elan_initialize(struct elan_tp_data *data)