HID: wacom: generic: add touchring adjustment for 2nd Gen Pro Small

Add the product ID for the 2nd Generation Intuos Pro
Small to the touchring coordinate adjustment block.
Signed-off-by: Aaron Armstrong Skomra <aaron.skomra@wacom.com>
Reviewed-by: Ping Cheng <ping.cheng@wacom.com>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>

drivers/hid/wacom_wac.c

@@ -2029,10 +2029,12 @@ static void wacom_wac_pad_event(struct hid_device *hdev, struct hid_field *field
 		if (hdev->vendor == 0x56a &&
 		    (hdev->product == 0x34d || hdev->product == 0x34e ||  /* MobileStudio Pro */
 		     hdev->product == 0x357 || hdev->product == 0x358 ||  /* Intuos Pro 2 */
+		     hdev->product == 0x392 ||				  /* Intuos Pro 2 */
 		     hdev->product == 0x399)) {				  /* MobileStudio Pro */
 			value = (field->logical_maximum - value);
 
-			if (hdev->product == 0x357 || hdev->product == 0x358)
+			if (hdev->product == 0x357 || hdev->product == 0x358 ||
+			    hdev->product == 0x392)
 				value = wacom_offset_rotation(input, usage, value, 3, 16);
 			else if (hdev->product == 0x34d || hdev->product == 0x34e ||
 				 hdev->product == 0x399)