Copy non-null pm_disk_mode option from pm_ops.

From:  Alexey Starikovskiy <alexey.y.starikovskiy@intel.com>


---

 kernel/power/main.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/kernel/power/main.c b/kernel/power/main.c
index 873228c..2085611 100644
--- a/kernel/power/main.c
+++ b/kernel/power/main.c
@@ -38,6 +38,8 @@ void pm_set_ops(struct pm_ops * ops)
 {
 	down(&pm_sem);
 	pm_ops = ops;
+	if (pm_ops && pm_ops->pm_disk_mode)
+		pm_disk_mode = pm_ops->pm_disk_mode;
 	up(&pm_sem);
 }