thermal: broadcom: constify thermal_zone_of_device_ops structure

The thermal_zone_of_device_ops structure can be const as it is only
passed as the last argument of thermal_zone_of_sensor_register
and the corresponding parameter is declared as const.

Done with the help of Coccinelle.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Reviewed-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>

drivers/thermal/broadcom/brcmstb_thermal.c

@@ -299,7 +299,7 @@ static int brcmstb_set_trips(void *data, int low, int high)
 	return 0;
 }
 
-static struct thermal_zone_of_device_ops of_ops = {
+static const struct thermal_zone_of_device_ops of_ops = {
 	.get_temp	= brcmstb_get_temp,
 	.set_trips	= brcmstb_set_trips,
 };