dt-bindings: vendor-prefixes: add Wandbord/Technexion

Document vendor prefix for Wandbord/Technexion.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20200926162811.5335-4-krzk@kernel.orgSigned-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/vendor-prefixes.yaml

@@ -1144,6 +1144,8 @@ patternProperties:
     description: Vision Optical Technology Co., Ltd.
   "^vxt,.*":
     description: VXT Ltd
+  "^wand,.*":
+    description: Wandbord (Technexion)
   "^waveshare,.*":
     description: Waveshare Electronics
   "^wd,.*":