Rename MODIFY_AUDIO_SYSTEM_SETTINGS

Rename MODIFY_AUDIO_SYSTEM_SETTINGS to
 MODIFY_AUDIO_SETTINGS_PRIVILEGED per API council feedback

Bug: 268300921
Test: atest android.media.audio.cts.AudioDeviceVolumeManagerTest
Change-Id: I540412a9ee528cb31130a4856b0bbde7fcba2a01
9 files changed