devicetree: Add vendor prefix for CZ.NIC

Signed-off-by: NUwe Kleine-König <uwe@kleine-koenig.org>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NGregory CLEMENT <gregory.clement@free-electrons.com>

Documentation/devicetree/bindings/vendor-prefixes.txt

@@ -67,6 +67,7 @@ creative	Creative Technology Ltd
 crystalfontz	Crystalfontz America, Inc.
 cubietech	Cubietech, Ltd.
 cypress	Cypress Semiconductor Corporation
+cznic	CZ.NIC, z.s.p.o.
 dallas	Maxim Integrated Products (formerly Dallas Semiconductor)
 davicom	DAVICOM Semiconductor, Inc.
 delta	Delta Electronics, Inc.