Print when the sysui dump actually starts. am: 1f89e284

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/24178708



Change-Id: Ib31480204795a6b6b6ca90a1c9674a922d5d74ea
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>