[Detail]
Because Android P impose so many restrictions, it is difficult for
meta mode or factory mode to format partitions. A new design is
adopted as follows:
1. Meta mode or factory mode write all 0 to first 4KB of target
partition.
2. When entering kernel booting, the partition mount process in the
original init flow find that XXX partition is wiped and automatically
format XXX partition.
In step-1 described above, selinux rules shall be added for meta_tst or
factory.
In step-2 described above, selinux rules shall be added for mke2fs.
MTK-Commit-Id: 7e9bbd418ca6353ba89ecffdc016c78504583bf3
Change-Id: I3dd869c57107b0ebebf3134f69c50744df8f8ff9
CR-Id: ALPS03957630
Feature: SP META Tool
