dt-bindings: vendor-prefixes: Add ONIE

As described on their website (see link below),

   "The Open Network Install Environment (ONIE) is an open source
    initiative that defines an open “install environment” for modern
    networking hardware."

It is not a proper corporation per-se but rather more a group which
tries to spread the use of open source standards in the networking
hardware world.

Link: https://opencomputeproject.github.io/onie/Signed-off-by: NMiquel Raynal <miquel.raynal@bootlin.com>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20221118063932.6418-13-srinivas.kandagatla@linaro.orgSigned-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Documentation/devicetree/bindings/vendor-prefixes.yaml

@@ -927,6 +927,8 @@ patternProperties:
     description: One Laptop Per Child
   "^oneplus,.*":
     description: OnePlus Technology (Shenzhen) Co., Ltd.
+  "^onie,.*":
+    description: Open Network Install Environment group
   "^onion,.*":
     description: Onion Corporation
   "^onnn,.*":