[PATCH 2/2] [DO NOT MERGE] Preserve FRP lock if wiped during SUW

Guard against FRP attacks by keeping the persistent data block
intact, if a factory reset has been issued during SUW.
Ticket: CYNGNOS-1404

Bug: 25290269
Change-Id: Id26b4c10235ad126632b71875592a4fa70a39b24
(cherry picked from commit 14bf226c)