thermal: core: Replace sprintf() in thermal_bind_cdev_to_trip()

Replace unbounded sprintf() with the safer snprintf(). While the
current code works correctly, snprintf() is safer and follows secure
coding best practices.

No functional changes.

Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
[ rjw: Subject tweaks ]
Link: https://patch.msgid.link/20260223073245.321298-2-thorsten.blum@linux.dev
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Author: toblux

drivers/thermal/thermal_core.c

@@ -861,7 +861,7 @@ static int thermal_bind_cdev_to_trip(struct thermal_zone_device *tz,
 		goto free_mem;
 
 	dev->id = result;
-	sprintf(dev->name, "cdev%d", dev->id);
+	snprintf(dev->name, sizeof(dev->name), "cdev%d", dev->id);
 	result =
 	    sysfs_create_link(&tz->device.kobj, &cdev->device.kobj, dev->name);
 	if (result)