Update barbet SVN to 52 am: 7204af45b4 am: c940ca8a57

Original change: https://googleplex-android-review.googlesource.com/c/device/google/barbet/+/25491429

Change-Id: I4f9e1d79d90bb70335298ff15628fcf0eecb14dd
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>