adbd: Disable "adb root" by system property

Author: Steve Kondik <shade@chemlab.org>
Date:   Sat Jan 14 17:04:22 2012 -0800

    adbd: Disable "adb root" by system property (2/3)

     * Require persist.sys.root_access=1 on non-eng debuggable builds

    Change-Id: Iedab030e81ffb525fed64aed80cf0014f3e07073

Author: Steve Kondik <steve@cyngn.com>
Date:   Sun Oct 18 02:07:16 2015 -0700

    adb: Fix compilation issue

    Change-Id: Ia3284d5b8e428474726f64231f8142cf2474b17f

Author: Michael Bestas <mkbestas@lineageos.org>
Date:   Thu Feb 1 17:04:45 2018 +0000
Edit:   Adapt for O and rebrand prop

Author: Bruno Martins <bgcngm@gmail.com>
Date:   Sat Nov 17 15:30:45 2018 +0000
Edit:   Remove useless Lineage prop check

Change-Id: Ib880967a72296edfb05b80875fbe18136338a8c5