Merge "[MTE] Add memtag sysprop sepolicy." am: e0bab54ba6 am: 3eba07e497 am: 654f38ae37

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

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I035a0ab7f24c54624acf203f0fae68660f9dcf9c