SystemUI: Expose camera and microphone icons to Tuner

Specially for devices with very wide notches, it can be particularly
useful for example to be able to disable location icon because it avoids
missing the sight of wifi and network signal when GPS apps are in use.

Original-Change-Id: I6abfa881fdd5afd523242dfb1e1178e6ac25cd45
Change-Id: I4583962acb7aaea7ee95218da5c0ff3039e1c55e