Merge "[MTE] Add memtag sysprop sepolicy." am: e0bab54ba6

Original change: https://android-review.googlesource.com/c/platform/system/sepolicy/+/1542329

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Ibb3bdd47e1f173c716cd8befc9df15b9e057c2e7