regulator: Lower priority of logging when setting supply

We lowered all the other constraint related log messages to debug level so
lower the logging of what supplies we're configuring to debug level too.

Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20210929140717.3769-1-broonie@kernel.org


Signed-off-by: Mark Brown <broonie@kernel.org>