Add sepolicy rules for boot control HAL

1. Allow bootctl HAL to get "ro.boot.hardware.platform"
2. Suppress the denial log caused by accessing to /metadata/gsi

Test: Flash selinux module and check the denials are gone
Bug: 152624953
Change-Id: If4aaef183fe50dbf0b91223429d198c762a1a7fd
2 files changed
tree: f600debd1a8dfc5dcb4eaa615a2efb11f102b8cd
  1. private/
  2. public/
  3. tracking_denials/
  4. vendor/
  5. OWNERS
  6. redbull-sepolicy.mk