Quicksettings: Fix derp in QuickSettingsTouchListener.

Change-Id: I08b6019fcdfeed042f8f7c532a52289e2417b7c7
Fix
Quicksettings: Immersive: Make last active state a system variable.

Will persist after reboot.

Signed-off-by: Carlo Savignano <stevewatersy@gmail.com>
Change-Id: I8f9f62d67e7de079e59ce5292604efacec042bcf