Input: psmouse - add support for eGalax PS/2 touchscreen controller

Based on the touchkit USB and lifebook PS/2 touchscreen driver.

The egalax touchsreen controller (PS/2 or USB version) is used in this 7"
device: http://www.cartft.com/catalog/il/449

Signed-off-by: Michal Piotrowski <michal.k.k.piotrowski@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/drivers/input/mouse/psmouse.h b/drivers/input/mouse/psmouse.h
index cf1de95..3964e8a 100644
--- a/drivers/input/mouse/psmouse.h
+++ b/drivers/input/mouse/psmouse.h
@@ -87,6 +87,7 @@
 	PSMOUSE_ALPS,
 	PSMOUSE_LIFEBOOK,
 	PSMOUSE_TRACKPOINT,
+	PSMOUSE_TOUCHKIT_PS2,
 	PSMOUSE_AUTO		/* This one should always be last */
 };