dt-bindings: crypto: Convert hisilicon,hip0{6,7}-sec to DT schema

Convert the HiSilicon HIP06/7 Security Accelerator binding to DT schema
format. It's a straight forward conversion.

Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>