sepolicy: rules for uid/pid cgroups v2 hierarchy

Bug: 168907513
Test: verified the correct working of the v2 uid/pid hierarchy in normal
and recovery modes

This reverts commit aa8bb3a29b92a342c42c802edac269da5984d1df.

Change-Id: Ib344d500ea49b86e862e223ab58a16601eebef47
diff --git a/private/logpersist.te b/private/logpersist.te
index ac324df..ab2c9c6 100644
--- a/private/logpersist.te
+++ b/private/logpersist.te
@@ -4,6 +4,7 @@
 userdebug_or_eng(`
 
   r_dir_file(logpersist, cgroup)
+  r_dir_file(logpersist, cgroup_v2)
 
   allow logpersist misc_logd_file:file create_file_perms;
   allow logpersist misc_logd_file:dir rw_dir_perms;