dt-bindings: regulator: add pca9450 regulator yaml
Add device binding doc for pca9450 pmic driver. Signed-off-by: Robin Gong <yibin.gong@nxp.com> Reviewed-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/1593793178-9737-3-git-send-email-yibin.gong@nxp.com Signed-off-by: Mark Brown <broonie@kernel.org>