thermal/drivers/rcar_thermal: Constify static thermal_zone_device_ops

The only usage of rcar_thermal_zone_of_ops is to pass its address to
devm_thermal_of_zone_register(), which takes a pointer to const struct
thermal_zone_device_ops. Make it const to allow the compiler to put
it in read-only memory.

Signed-off-by: Lad Prabhakar <[email protected]>
Reviewed-by: Niklas Söderlund <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Daniel Lezcano <[email protected]>

Author: prabhakarlad

drivers/thermal/rcar_thermal.c

@@ -316,7 +316,7 @@ static int rcar_thermal_get_trip_temp(struct thermal_zone_device *zone,
 	return 0;
 }
 
-static struct thermal_zone_device_ops rcar_thermal_zone_of_ops = {
+static const struct thermal_zone_device_ops rcar_thermal_zone_of_ops = {
 	.get_temp	= rcar_thermal_get_temp,
 };