Add support for pshold block to drive pshold towards the PMIC, which is used to trigger a configurable event such as reboot or poweroff of the SDX55 platform. Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Link: https://lore.kernel.org/r/20210118051005.55958-7-manivannan.sadhasivam@linaro.org Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>