power: regulator: Add support for regulator-force-boot-off
Add support for regulator-force-boot-off DT property.
This property can be used by the board/device drivers for
turning off regulators on early init stages as pre-requisite
for the other components initialization.
Signed-off-by: Konstantin Porotchkin <kostap@marvell.com> Signed-off-by: Stefan Roese <sr@denx.de> Cc: Jaehoon Chung <jh80.chung@samsung.com> Cc: Simon Glass <sjg@chromium.org> Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>