HID: wacom: implement the finger part of the HID generic handling

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Acked-by: Jason Gerecke <killertofu@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/hid/wacom_wac.h b/drivers/hid/wacom_wac.h
index f472eac..0f0b85e 100644
--- a/drivers/hid/wacom_wac.h
+++ b/drivers/hid/wacom_wac.h
@@ -156,9 +156,17 @@
 };
 
 struct hid_data {
+	__s16 inputmode;	/* InputMode HID feature, -1 if non-existent */
+	__s16 inputmode_index;	/* InputMode HID feature index in the report */
 	bool inrange_state;
 	bool invert_state;
 	bool tipswitch;
+	int x;
+	int y;
+	int pressure;
+	int width;
+	int height;
+	int id;
 };
 
 struct wacom_wac {