Multi-user support for phones

Allow multi-user support on devices that previously didn't have it without
hard-coding it on.

ps2: Give it the nuclear touch.
ps3: Correct initialization.

Change-Id: I376f3f51ee1d8843d0977384101f93e23e278c97
Squashed revert of AppOps until gapps SetupWizard behaves

Change-Id: I826599864c541071e60412a51f9d8e910a2e5f9a