Merge "Revert "Temporarily disable checkstyle hook"" into rvc-dev am: d9df6c30 am: 40a40412 am: 41a4b3c0

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

Change-Id: If451a0a6261381ed83699a87ccad05722fd74a22