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[TEMP] m8: don't build dotcase yet

Change-Id: Icf3c98882ab76e160d262f6c40867c88c1bf18d1
[TEMP] m8: disable overlays that don't exist yet

Change-Id: I604c4b7c39b07acf62d6e44b785c9a65f6cb56b8
sepolicy: add device specific-sepolicies

Change-Id: I1d099f482b157d9b04488048234e987ff488afcb