Add license headers am: a9c6ecb787 am: aa950fe0c8 am: 89abaa1932

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Car/DebuggingRestrictionController/+/15447645

Change-Id: Ie96187cc1aa7db3206c313aeae8ee2b2f780b401