regulator: tps65912: Constify static regulator_ops

The only usage of tps65912_ops_dcdc and tps65912_ops_ldo is to assign
their address to the ops field in the regulator_desc struct, which is a
const pointer. Make them const to allow the compiler to put them in
read-only memory.
Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
Link: https://lore.kernel.org/r/20200829221104.20870-8-rikard.falkeborn@gmail.comSigned-off-by: Mark Brown <broonie@kernel.org>

drivers/regulator/tps65912-regulator.c

@@ -57,7 +57,7 @@ static const struct linear_range tps65912_ldo_ranges[] = {
 };
 
 /* Operations permitted on DCDCx */
-static struct regulator_ops tps65912_ops_dcdc = {
+static const struct regulator_ops tps65912_ops_dcdc = {
 	.is_enabled		= regulator_is_enabled_regmap,
 	.enable			= regulator_enable_regmap,
 	.disable		= regulator_disable_regmap,
@@ -67,7 +67,7 @@ static struct regulator_ops tps65912_ops_dcdc = {
 };
 
 /* Operations permitted on LDOx */
-static struct regulator_ops tps65912_ops_ldo = {
+static const struct regulator_ops tps65912_ops_ldo = {
 	.is_enabled		= regulator_is_enabled_regmap,
 	.enable			= regulator_enable_regmap,
 	.disable		= regulator_disable_regmap,