Add debug logs to understand update start delay

Test: th
Bug: 352332753
Change-Id: Id27d79c8d22713ea33b741dc6170954810753ebd
diff --git a/aosp/dynamic_partition_control_android.cc b/aosp/dynamic_partition_control_android.cc
index d8df520..e950a2e 100644
--- a/aosp/dynamic_partition_control_android.cc
+++ b/aosp/dynamic_partition_control_android.cc
@@ -317,6 +317,7 @@
 
 void DynamicPartitionControlAndroid::Cleanup() {
   UnmapAllPartitions();
+  LOG(INFO) << "UnmapAllPartitions done";
   metadata_device_.reset();
   if (GetVirtualAbFeatureFlag().IsEnabled()) {
     snapshot_ = SnapshotManager::New();
@@ -324,6 +325,7 @@
     snapshot_ = SnapshotManagerStub::New();
   }
   CHECK(snapshot_ != nullptr) << "Cannot initialize SnapshotManager.";
+  LOG(INFO) << "SnapshotManager initialized.";
 }
 
 bool DynamicPartitionControlAndroid::DeviceExists(const std::string& path) {