dt-bindings: vendor-prefixes: Add Coreriver vendor prefix

Coreriver is a South Korean microcontroller manufacturer:
http://coreriver.comSigned-off-by: Nick Reitemeyer <nick.reitemeyer@web.de>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20200121141525.3404-1-nick.reitemeyer@web.deSigned-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Documentation/devicetree/bindings/vendor-prefixes.yaml

@@ -199,6 +199,8 @@ patternProperties:
     description: Colorful GRP, Shenzhen Xueyushi Technology Ltd.
   "^compulab,.*":
     description: CompuLab Ltd.
+  "^coreriver,.*":
+    description: CORERIVER Semiconductor Co.,Ltd.
   "^corpro,.*":
     description: Chengdu Corpro Technology Co., Ltd.
   "^cortina,.*":