USB: Wacom driver updates

This fixes some issues with the current wacom driver due to the split of
the driver into different pieces and adds support for the Intuos3 4x6

Signed-off-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/input/wacom_wac.h b/drivers/usb/input/wacom_wac.h
index ceae7bf..a1d9ce0 100644
--- a/drivers/usb/input/wacom_wac.h
+++ b/drivers/usb/input/wacom_wac.h
@@ -20,6 +20,7 @@
 	PTU,
 	PL,
 	INTUOS,
+	INTUOS3S,
 	INTUOS3,
 	INTUOS3L,
 	CINTIQ,
@@ -34,7 +35,6 @@
 	int pressure_max;
 	int distance_max;
 	int type;
-	usb_complete_t irq;
 };
 
 struct wacom_wac {