Merge "Revert "Temporarily disable checkstyle hook"" into rvc-dev am: d9df6c3024 am: 1d4959b110 am: d774af33eb am: b44e8192a0

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/12129283

Change-Id: Ia876c1eee5c119080e5ca64cd3c014be1d45bfde