Merge "Prevent writing to FRP partition during factory reset." into lmp-mr1-dev am: 4bd97eb888 am: a8484b4f92 am: d7f2a4b0c7 am: b64af9bacd am: e15e0de7e5 am: 6bb6f02a15 am: 03fa83e216 am: c189f23dd4 am: 835c1bcedb am: b5f3383589
am: e167e6d284

Change-Id: I036d794b37bad0418f0f667c33d09e605df9f69b