dt-bindings: add vendor prefix for welltech

Add vendor prefix for Welltech computer Co Ld.

Link: https://lore.kernel.org/r/20210504193457.4008384-4-clabbe@baylibre.comSigned-off-by: Corentin Labbe <clabbe@baylibre.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Olof Johansson <olof@lixom.net>

Documentation/devicetree/bindings/vendor-prefixes.yaml

@@ -1244,6 +1244,8 @@ patternProperties:
     description: Western Digital Corp.
   "^we,.*":
     description: Würth Elektronik GmbH.
+  "^welltech,.*":
+    description: Welltech Computer Co., Limited.
   "^wetek,.*":
     description: WeTek Electronics, limited.
   "^wexler,.*":