power: supply: core: constify psy_tzd_ops

This struct is never modified, so mark it const.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Link: https://lore.kernel.org/r/20240828-power-supply-const-psy_tzd_ops-v1-1-dc27176fda5b@weissschuh.netSigned-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

drivers/power/supply/power_supply_core.c

@@ -1295,7 +1295,7 @@ static int power_supply_read_temp(struct thermal_zone_device *tzd,
 	return ret;
 }
 
-static struct thermal_zone_device_ops psy_tzd_ops = {
+static const struct thermal_zone_device_ops psy_tzd_ops = {
 	.get_temp = power_supply_read_temp,
 };