add explicit 32-bits of padding to UidTrackingInfo struct am: 8f4e41d6 am: c34fb538 am: 086d7c59 am: 1ae950be

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/18800447



Change-Id: Ica467631e5e9385577af436697305957bfe4683d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>