RESTRICT AUTOMERGE Revert "Move mtectrl to private"

Revert submission 1959735

Reason for revert: b/220807329
Reverted Changes:
Idb5c4a4c6:Move mtectrl to private
I2e8419366:Add policy for command line tool to control MTE bo...

Change-Id: I663113df93fe9fec597ad346a1d07888b068c20e
5 files changed