HID: hid-multitouch: add one new multitouch device's VID/PID

This patch adds support for the CSR panel built by XAT.

Signed-off-by: Ice Chien <ice.chien@accupoint.com.tw>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
index acc39e8..6008e63 100644
--- a/drivers/hid/Kconfig
+++ b/drivers/hid/Kconfig
@@ -335,6 +335,7 @@
 	  - Stantum multitouch panels
 	  - Touch International Panels
 	  - Unitec Panels
+	  - XAT optical touch panels
 
 	  If unsure, say N.