dt-bindings: vendor-prefixes: add SoChip

Shenzhen SoChip Technology Co., Ltd. is a hardware vendor that produces
EVBs with Allwinner chips. There's also a SoC named S3 that is developed
by Allwinner (based on Allwinner V3/V3s) but branded SoChip.

Add the vendor prefix for SoChip.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/vendor-prefixes.yaml

@@ -851,6 +851,8 @@ patternProperties:
     description: Standard Microsystems Corporation
   "^snps,.*":
     description: Synopsys, Inc.
+  "^sochip,.*":
+    description: Shenzhen SoChip Technology Co., Ltd.
   "^socionext,.*":
     description: Socionext Inc.
   "^solidrun,.*":