regulator: ab8500: Constify regulator_ops

These regulator_ops variables never need to be modified, make them const so
compiler can put them to .rodata.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

drivers/regulator/ab8500.c

@@ -510,7 +510,7 @@ static int ab8500_regulator_set_voltage_sel(struct regulator_dev *rdev,
 	return ret;
 }
 
-static struct regulator_ops ab8500_regulator_volt_mode_ops = {
+static const struct regulator_ops ab8500_regulator_volt_mode_ops = {
 	.enable			= ab8500_regulator_enable,
 	.disable		= ab8500_regulator_disable,
 	.is_enabled		= ab8500_regulator_is_enabled,
@@ -522,7 +522,7 @@ static struct regulator_ops ab8500_regulator_volt_mode_ops = {
 	.list_voltage		= regulator_list_voltage_table,
 };
 
-static struct regulator_ops ab8500_regulator_volt_ops = {
+static const struct regulator_ops ab8500_regulator_volt_ops = {
 	.enable		= ab8500_regulator_enable,
 	.disable	= ab8500_regulator_disable,
 	.is_enabled	= ab8500_regulator_is_enabled,
@@ -531,7 +531,7 @@ static struct regulator_ops ab8500_regulator_volt_ops = {
 	.list_voltage	= regulator_list_voltage_table,
 };
 
-static struct regulator_ops ab8500_regulator_mode_ops = {
+static const struct regulator_ops ab8500_regulator_mode_ops = {
 	.enable			= ab8500_regulator_enable,
 	.disable		= ab8500_regulator_disable,
 	.is_enabled		= ab8500_regulator_is_enabled,
@@ -541,14 +541,14 @@ static struct regulator_ops ab8500_regulator_mode_ops = {
 	.list_voltage		= regulator_list_voltage_table,
 };
 
-static struct regulator_ops ab8500_regulator_ops = {
+static const struct regulator_ops ab8500_regulator_ops = {
 	.enable			= ab8500_regulator_enable,
 	.disable		= ab8500_regulator_disable,
 	.is_enabled		= ab8500_regulator_is_enabled,
 	.list_voltage		= regulator_list_voltage_table,
 };
 
-static struct regulator_ops ab8500_regulator_anamic_mode_ops = {
+static const struct regulator_ops ab8500_regulator_anamic_mode_ops = {
 	.enable		= ab8500_regulator_enable,
 	.disable	= ab8500_regulator_disable,
 	.is_enabled	= ab8500_regulator_is_enabled,