Input: add driver for Touchwin serial touchscreens

Signed-off-by: Rick Koch <n1gp@hotmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/include/linux/serio.h b/include/linux/serio.h
index 1526064..c906931 100644
--- a/include/linux/serio.h
+++ b/include/linux/serio.h
@@ -219,5 +219,6 @@
 #define SERIO_MICROTOUCH	0x30
 #define SERIO_PENMOUNT	0x31
 #define SERIO_TOUCHRIGHT	0x32
+#define SERIO_TOUCHWIN	0x33
 
 #endif