Allow specifying Vddd regulator/supply to be enabled on I2C probing.

Signed-off-by: Vincent Knecht <vincent.knecht@mailoo.org>
Reviewed-by: Stephan Gerhold <stephan@gerhold.net>
Link: https://lore.kernel.org/r/20210528105101.508254-4-vincent.knecht@mailoo.org


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