Print when the sysui dump actually starts. am: 1f89e284 am: c8af8c5c

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



Change-Id: I705fea5d6b45edc03e25962ca54b9716c8fdca2b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>