BACKPORT: FROMLIST: dt-bindings: qcom_spmi: Document pms405 support

The PMS405 supports 5 SMPS and 13 LDO regulators.

am link : https://patchwork.kernel.org/patch/10783619/



Signed-off-by: Jorge Ramirez-Ortiz <jorge.ramirez-ortiz@linaro.org>
Signed-off-by: Khasim Syed Mohammed <khasim.mohammed@linaro.org>