Merge "Add fuzz targets for SELinux." am: 14e430c1aa am: f938b97422 am: b31b6d902a

Original change: https://android-review.googlesource.com/c/platform/external/selinux/+/1464002

Change-Id: I3e3b4e4a5554a196a0dc4537f5f970da84c120c1