regulator: max77843: Reduce duplication of regulator_desc initializers

Replace duplicated SAFEOUT regulators initializers in array of struct
'regulator_desc' arrays with macro. Generated object is the same but
SAFEOUT is described only once.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski.k@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>