regulator: anatop: Constify anatop_core_rops

anatop_core_rops is not modified and can therefore be made const which
allows the compiler to put it in read-only memory.

Before:
text data bss dec hex filename
4502 412 0 4914 1332 drivers/regulator/anatop-regulator.o

After:
text data bss dec hex filename
4634 280 0 4914 1332 drivers/regulator/anatop-regulator.o

Signed-off-by: Rikard Falkeborn <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Mark Brown <[e-mail]>

drivers/regulator/anatop-regulator.c

···
 	.map_voltage = regulator_map_voltage_linear,
 };
 
-static struct regulator_ops anatop_core_rops = {
+static const struct regulator_ops anatop_core_rops = {
 	.enable = anatop_regmap_enable,
 	.disable = anatop_regmap_disable,
 	.is_enabled = anatop_regmap_is_enabled,