regulator: dt-bindings: pca9450: add pca9451a support

Update pca9450 bindings.

Signed-off-by: Joy Zou <joy.zou@nxp.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://msgid.link/r/20240318095633.4079027-2-joy.zou@nxp.com


Signed-off-by: Mark Brown <broonie@kernel.org>