dt-bindings: vendor-prefixes: add Transpeed

This is a name used by some Chinese TV boxes, add it to the bindings.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20231214015312.17363-2-andre.przywara@arm.comSigned-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>

Documentation/devicetree/bindings/vendor-prefixes.yaml

@@ -1434,6 +1434,8 @@ patternProperties:
     description: TPO
   "^tq,.*":
     description: TQ-Systems GmbH
+  "^transpeed,.*":
+    description: Transpeed
   "^traverse,.*":
     description: Traverse Technologies Australia Pty Ltd
   "^tronfy,.*":