This adds supports for regulator that are not software controlable. It allows
them to coexist in systems with mixed supplies.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NMike Rapoport <mike@compulab.co.il>
Signed-off-by: NLiam Girdwood <lg@opensource.wolfsonmicro.com>