const: constify remaining dev_pm_ops

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index 9fecfb4..73901c9 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -1904,7 +1904,7 @@
 	return ret;
 }
 
-static struct dev_pm_ops ccw_pm_ops = {
+static const struct dev_pm_ops ccw_pm_ops = {
 	.prepare = ccw_device_pm_prepare,
 	.complete = ccw_device_pm_complete,
 	.freeze = ccw_device_pm_freeze,