dm: power: Add a function to set up all regulators
The device tree provides information about which regulators should be on at boot, or always on. Use this to set them up automatically. Signed-off-by: NSimon Glass <sjg@chromium.org> Tested-by: NPrzemyslaw Marczak <p.marczak@samsung.com> Acked-by: NPrzemyslaw Marczak <p.marczak@samsung.com>
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