Add SELinux stuffs to boot am: d8cf762504

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/1593558

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I94c7d4e2b0cf724b70ce3cb4a58ce80dd961f014
tree: 421ed3d5a1e1269c450609dff5dbd7655bf20831
  1. apex/
  2. authfs/
  3. docs/
  4. microdroid/
  5. tests/
  6. virtmanager/
  7. .clang-format
  8. PREUPLOAD.cfg