Revert "selinux: Enforcing"

Currently superuser isn't working on bacon when kernel is in enforced SELinux mode
So we have to put it back to permissive for now.
This is only temporary and should be reverted as soon as superuser is also working in enforced mode for security reasons

PS2: Commitmessage changed

This reverts commit d3a3a61245d0a12d76be47c61326a7ffbdfa3a5b.

Change-Id: I20c2fa40bd5bc635906b1eda28031f41d272e86d