HID: multitouch: Support ALPS PTP stick with pid 0x120A

This patch adds ALPS PTP sticks with pid/device id 0x120A to the list of
devices supported by hid-multitouch.
Signed-off-by: Shrirang Bagul <shrirang.bagul@canonical.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

drivers/hid/hid-ids.h

@@ -75,6 +75,7 @@
 
 #define USB_VENDOR_ID_ALPS_JP		0x044E
 #define HID_DEVICE_ID_ALPS_U1_DUAL	0x120B
+#define HID_DEVICE_ID_ALPS_U1_PTP_2		0x120A
 #define HID_DEVICE_ID_ALPS_U1_DUAL_PTP	0x121F
 #define HID_DEVICE_ID_ALPS_U1_DUAL_3BTN_PTP	0x1220
 

drivers/hid/hid-multitouch.c

@@ -1419,6 +1419,10 @@ static const struct hid_device_id mt_devices[] = {
 		HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
 			USB_VENDOR_ID_ALPS_JP,
 			HID_DEVICE_ID_ALPS_U1_DUAL_3BTN_PTP) },
+	{ .driver_data = MT_CLS_WIN_8_DUAL,
+		HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8,
+			USB_VENDOR_ID_ALPS_JP,
+			HID_DEVICE_ID_ALPS_U1_PTP_2) },
 
 	/* Lenovo X1 TAB Gen 2 */
 	{ .driver_data = MT_CLS_WIN_8_DUAL,