regulator: mc13892: Use regulator_map_voltage_ascend for mc13892_sw_regulator_ops

Both mc13892_sw1 and mc13892_sw voltage table have ascendant voltage list.
Use regulator_map_voltage_ascend for them.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
1 file changed