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/power/wm97xx_battery.c b/drivers/power/wm97xx_battery.c
index f2bfd29..fa39e75 100644
--- a/drivers/power/wm97xx_battery.c
+++ b/drivers/power/wm97xx_battery.c
@@ -157,7 +157,7 @@
 	return 0;
 }
 
-static struct dev_pm_ops wm97xx_bat_pm_ops = {
+static const struct dev_pm_ops wm97xx_bat_pm_ops = {
 	.suspend	= wm97xx_bat_suspend,
 	.resume		= wm97xx_bat_resume,
 };