Add android.service.wallpaper package to layoutlib jar am: 6ec3b513c5

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/layoutlib/+/16222423

Change-Id: I78b3873c57565dec438faab5311288a60718c271