9b7ac517c2
Add support for a dummy driver that has an implementation connected to no real hardware devices. Its purpose is to aid bringup scenarios by providing clients a regulator interface that they expect. This driver shouldn't be enabled if a real device implementation for a particular platform already exists. Change-Id: Ib83027b4e599ebbc3cb153b2f346bb03495bb746 Signed-off-by: Michael Bohan <mbohan@codeaurora.org>