AudioTrack: Add TunerConfiguration.CONTENT_ID_NONE

Test: atest AudioTrackTest#testTunerConfiguration
Bug: 181354677
Merged-In: I679c809ee8834c5a608243c353bc3a76ec55243c
Change-Id: I679c809ee8834c5a608243c353bc3a76ec55243c
2 files changed