dt-bindings: Add Marantec vendor prefix

Add vendor prefix for Marantec electronics GmbH.
Signed-off-by: Christoph Niedermaier <cniedermaier@dh-electronics.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20231016150415.3196-1-cniedermaier@dh-electronics.comSigned-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/vendor-prefixes.yaml

@@ -805,6 +805,8 @@ patternProperties:
     description: Mantix Display Technology Co.,Ltd.
   "^mapleboard,.*":
     description: Mapleboard.org
+  "^marantec,.*":
+    description: Marantec electronics GmbH
   "^marvell,.*":
     description: Marvell Technology Group Ltd.
   "^maxbotix,.*":