Emails to Pratyush Yadav bounce ("550 Invalid recipient").  Generic SPI
properties should be maintained by subsystem maintainer (Mark).  Add
recent contributor Vaishnav Achath to the Cadence SPI bindings.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220811063826.7620-1-krzysztof.kozlowski@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>