Input: add driver for Tabletkiosk Sahara TouchIT-213 touchscreen

Signed-off-by: Claudio Nieder <private@claudio.ch>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/include/linux/serio.h b/include/linux/serio.h
index 36c6ab8..48defc4 100644
--- a/include/linux/serio.h
+++ b/include/linux/serio.h
@@ -213,5 +213,6 @@
 #define SERIO_FUJITSU	0x35
 #define SERIO_ZHENHUA	0x36
 #define SERIO_INEXIO	0x37
+#define SERIO_TOUCHIT213	0x37
 
 #endif