regulator: lp3972: Constify lp3972_ldo_ops and lp3972_dcdc_ops

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

drivers/regulator/lp3972.c

@@ -305,7 +305,7 @@ static int lp3972_ldo_set_voltage_sel(struct regulator_dev *dev,
 	return ret;
 }
 
-static struct regulator_ops lp3972_ldo_ops = {
+static const struct regulator_ops lp3972_ldo_ops = {
 	.list_voltage = regulator_list_voltage_table,
 	.map_voltage = regulator_map_voltage_ascend,
 	.is_enabled = lp3972_ldo_is_enabled,
@@ -386,7 +386,7 @@ static int lp3972_dcdc_set_voltage_sel(struct regulator_dev *dev,
 				LP3972_VOL_CHANGE_FLAG_MASK, 0);
 }
 
-static struct regulator_ops lp3972_dcdc_ops = {
+static const struct regulator_ops lp3972_dcdc_ops = {
 	.list_voltage = regulator_list_voltage_table,
 	.map_voltage = regulator_map_voltage_ascend,
 	.is_enabled = lp3972_dcdc_is_enabled,