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/net/smsgiucv.c b/drivers/s390/net/smsgiucv.c
index 3012355..67f2485 100644
--- a/drivers/s390/net/smsgiucv.c
+++ b/drivers/s390/net/smsgiucv.c
@@ -168,7 +168,7 @@
 	return 0;
 }
 
-static struct dev_pm_ops smsg_pm_ops = {
+static const struct dev_pm_ops smsg_pm_ops = {
 	.freeze = smsg_pm_freeze,
 	.thaw = smsg_pm_restore_thaw,
 	.restore = smsg_pm_restore_thaw,