Update vibrator on/off status from accessibility settings menu

Fix ringing and touch vibration cannot be turned off from accessibility
settings menu.

Bug: 116172311
Fix: 125618621
Test: Open Settings=>Accessibility=>Vibration, change every sub-item and
verify the change can synced with main page, also check the settings can
synced with Sounds.
Test: m -j RunSettingsRoboTests

Change-Id: I7a10bcda17323bce612e199bdf067363b8f9a332