Add debug logs to understand slow update start issue

Test: th
Bug: 352332753
Change-Id: I81bfdc1e1f099b7992c9cfbdeda463b9b1070601
diff --git a/aosp/update_attempter_android.cc b/aosp/update_attempter_android.cc
index 0f6fc5c..b19d424 100644
--- a/aosp/update_attempter_android.cc
+++ b/aosp/update_attempter_android.cc
@@ -299,6 +299,8 @@
   install_plan_.is_resume = !payload_id.empty() &&
                             DeltaPerformer::CanResumeUpdate(prefs_, payload_id);
   if (!install_plan_.is_resume) {
+    LOG(INFO) << "Starting a new update " << payload_url
+              << " size: " << payload_size << " offset: " << payload_offset;
     boot_control_->GetDynamicPartitionControl()->Cleanup();
     boot_control_->GetDynamicPartitionControl()->ResetUpdate(prefs_);