dt-bindings: vendor-prefixes: add OnePlus

Add vendor prefix for OnePlus (https://www.oneplus.com/)
Signed-off-by: Stanislav Jakubek <stano.jakubek@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211223141002.GA5979@standask-GA-A55M-S2HP

Documentation/devicetree/bindings/vendor-prefixes.yaml

@@ -852,6 +852,8 @@ patternProperties:
     description: OLIMEX Ltd.
   "^olpc,.*":
     description: One Laptop Per Child
+  "^oneplus,.*":
+    description: OnePlus Technology (Shenzhen) Co., Ltd.
   "^onion,.*":
     description: Onion Corporation
   "^onnn,.*":