dt-bindings: add vendor prefix for Auvidea GmbH

Auvidea (http://www.auvidea.eu/) produces embedded devices and
baseboards with a focus on audio and video technology.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/vendor-prefixes.txt

@@ -36,6 +36,7 @@ aspeed	ASPEED Technology Inc.
 atlas	Atlas Scientific LLC
 atmel	Atmel Corporation
 auo	AU Optronics Corporation
+auvidea Auvidea GmbH
 avago	Avago Technologies
 avic	Shanghai AVIC Optoelectronics Co., Ltd.
 axis	Axis Communications AB