dt-bindings: add vendor prefix for Netxeon Technology

Signed-off-by: NHeiko Stuebner <heiko@sntech.de>
Acked-by: NRob Herring <robh@kernel.org>
Reviewed-by: NRomain Perier <romain.perier@gmail.com>

Documentation/devicetree/bindings/vendor-prefixes.txt

@@ -143,6 +143,7 @@ national	National Semiconductor
 neonode		Neonode Inc.
 netgear	NETGEAR
 netlogic	Broadcom Corporation (formerly NetLogic Microsystems)
+netxeon		Shenzhen Netxeon Technology CO., LTD
 newhaven	Newhaven Display International
 nintendo	Nintendo
 nokia	Nokia