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

Xiphera is an FPGA-based cryptographic solutions provider based in
Finland.
Website of the company: https://xiphera.com/Signed-off-by: Atte Tommiska <atte.tommiska@xiphera.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

Documentation/devicetree/bindings/vendor-prefixes.yaml

@@ -1174,6 +1174,8 @@ patternProperties:
     description: Shenzhen Xingbangda Display Technology Co., Ltd
   "^xinpeng,.*":
     description: Shenzhen Xinpeng Technology Co., Ltd
+  "^xiphera,.*":
+    description: Xiphera Ltd.
   "^xlnx,.*":
     description: Xilinx
   "^xnano,.*":