Make minimum gc sleep time tunnable

Test: check smart idle maint log of StorageManagerService
Signed-off-by: Daeho Jeong <daehojeong@google.com>
Change-Id: I5a70e4ec2ca895551b6446a9dfd4bb5003a3fbd0
diff --git a/binder/android/os/IVold.aidl b/binder/android/os/IVold.aidl
index a946797..8422efb 100644
--- a/binder/android/os/IVold.aidl
+++ b/binder/android/os/IVold.aidl
@@ -69,7 +69,7 @@
     int getStorageLifeTime();
     void setGCUrgentPace(int neededSegments, int minSegmentThreshold,
                          float dirtyReclaimRate, float reclaimWeight,
-                         int gcPeriod);
+                         int gcPeriod, int minGCSleepTime);
     void refreshLatestWrite();
     int getWriteAmount();