Run fsck to resolve possible data corruption

Trigger fsck on mount of /data if the value of ro.preventative_fsck is
not equal to the contents of /metadata/vold/preventative_fsck, then set
the file to the property to prevent future runs

See b/305658663 for context

Bug: 305658663
Test: Make sure fsck run after first boot and not after second
Change-Id: I1263d2d55fe22d994ae8c8654b1e75ad9e4ddafe
1 file changed