Revert "SELinux: su: update policies"

This reverts commit 04fd9192b05ae2655560a444711fe8859430f439.

Change-Id: I69e51fb6c151a48972cf81947c1c59c6f26f60e9
selinux: Workaround for devices with PR_SET_NO_NEW_PRIVS enforcement

PR_SET_NO_NEW_PRIVS blocks domain transitions from within app_process,
unless the new domain is bounded by the app's context. So we can't
switch to a domain that has perms not available to untrusted_app :(

This means any app can talk to the daemon, bypassing the su executable
client. That's not a good thing, and needs to be resolved.

Change-Id: I85b74f90b8737caaa193a0555b5262e7392519b2
sepolicy: More rules for recovery

Change-Id: Ie50c04eb83cb9c62f679a1c1aa2ac482af159f7e
Set permissions on sysfs nodes

Credits to OmniROM

Change-Id: If925d23a1fdd762a5b0ed3476811b7995e26cbdb
rootdir: fix path for read_ahead sysfs

Change-Id: Iec934e97a07e393d12806a3286e47b998f994ac2
sepolicy: allow access for perfomance settings

Credits to OmniROM

Change-Id: Ide32195467d312fdc69eb73a3982dcfd9fdac74a
vendor: Update SELinux policy for sysinit

Fix denial of

adb shell su -c dmesg | grep 'avc: '
<4>[4.595855] C1 [init] avc:  denied  { set } for property=supolicy.loaded scontext=u:r:sysinit:s0 tcontext=u:object_r:default_prop:s0 tclass=property_service

Thanks @freshgiammi

Change-Id: I95b490133bc59337fbf2bc12cc47aaad9bd0c30e