dt-bindings: vendor-prefixes: Add Vaisala

Vaisala Oyj is a company based in Finland and also has subsidiaries in other
countries. Vaisala develops, manufactures and markets innovative products and
services for environmental and industrial measurement.

https://www.vaisala.com/Signed-off-by: Vesa Jääskeläinen <vesa.jaaskelainen@vaisala.com>
Signed-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/vendor-prefixes.yaml

@@ -1075,6 +1075,8 @@ patternProperties:
     description: Aigo Digital Technology Co., Ltd.
   "^v3,.*":
     description: V3 Semiconductor
+  "^vaisala,.*":
+    description: Vaisala
   "^vamrs,.*":
     description: Vamrs Ltd.
   "^variscite,.*":