regulator: twl6030: Constify regulator_ops

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

drivers/regulator/twl6030-regulator.c

@@ -244,7 +244,7 @@ static int twl6030coresmps_get_voltage(struct regulator_dev *rdev)
 	return -ENODEV;
 }
 
-static struct regulator_ops twl6030coresmps_ops = {
+static const struct regulator_ops twl6030coresmps_ops = {
 	.set_voltage	= twl6030coresmps_set_voltage,
 	.get_voltage	= twl6030coresmps_get_voltage,
 };
@@ -266,7 +266,7 @@ static int twl6030ldo_get_voltage_sel(struct regulator_dev *rdev)
 	return vsel;
 }
 
-static struct regulator_ops twl6030ldo_ops = {
+static const struct regulator_ops twl6030ldo_ops = {
 	.list_voltage	= regulator_list_voltage_linear_range,
 
 	.set_voltage_sel = twl6030ldo_set_voltage_sel,
@@ -281,7 +281,7 @@ static struct regulator_ops twl6030ldo_ops = {
 	.get_status	= twl6030reg_get_status,
 };
 
-static struct regulator_ops twl6030fixed_ops = {
+static const struct regulator_ops twl6030fixed_ops = {
 	.list_voltage	= regulator_list_voltage_linear,
 
 	.enable		= twl6030reg_enable,
@@ -472,7 +472,7 @@ static int twl6030smps_get_voltage_sel(struct regulator_dev *rdev)
 	return twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE_SMPS);
 }
 
-static struct regulator_ops twlsmps_ops = {
+static const struct regulator_ops twlsmps_ops = {
 	.list_voltage		= twl6030smps_list_voltage,
 	.map_voltage		= twl6030smps_map_voltage,