regulator: mt6359: Remove shift fields from struct mt6359_regulator_info

The shift setting can be calculated via the corresponding mask field,
so remove these shift fields.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Link: https://lore.kernel.org/r/20210629130503.2183574-2-axel.lin@ingics.com


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