dt-bindings: vendor-prefix: add Wanchanglong Electronics Technology

Wanchanglong Electronics Technology is a company to provide LCD
modules.
Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20211016102232.202119-2-michael@amarulasolutions.com

Documentation/devicetree/bindings/vendor-prefixes.yaml

@@ -1306,6 +1306,8 @@ patternProperties:
     description: Wondermedia Technologies, Inc.
   "^wobo,.*":
     description: Wobo
+  "^wanchanglong,.*":
+    description: Wanchanglong Electronics Technology（SHENZHEN）Co.，Ltd.
   "^x-powers,.*":
     description: X-Powers
   "^xes,.*":