Bring Eos NX indicator back for all the fans

This brings it back. Watch for show/hide settings.

PS2: fix logo layout
PS3: add settings observer
PS4: attempt to fix tablet logo off center
PS5: yet again try to fix tablet off center logo

Change-Id: I05e4cd6d88b9bf2d3cfc5f6d4319fe2cbdbbce7b