Settings: Notification PEEK Time [2/2]

Based on PEEK wakelock timeout code from here: https://github.com/n5x/n5x_packages_apps_Settings/commit/e3f80c3b7bece60731f22f0281ff9967501a83ba

Change-Id: I4f1d24190eb9fa1e711cbb958748d6a66d0af17a