regulator: pfuze100: Support SWB enable/disable
regulator: pfuze100: Support SWB enable/disable

The SWB regulators have the ability to be turned on and off.  Add
enable/disable support for these regulators.

Signed-off-by: Sean Cross <dd28e116ed3e781f3ae781acae9fb18383f35c2f@kosagi.com>
Signed-off-by: Mark Brown <b51b9a92386687a9ac927cebfa0f978adeb8cea5@linaro.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs