BoardConfigCommon.mk: remove BOARD_SUPPRESS_SECURE_ERASE

Change-Id: Ibc0a88931bf47f5bdd2ec2fd6ceda5b39079907d
Update toolchain

Change-Id: Ib74978f289a9bc1ea6eaca7dccaf51c6c1f7d80a
Set selinux permissive, and update rmt.te

Change-Id: Id4a7c3653a8c37e2e217ad09af6f1ae24f0f2033