Update playback state only for navigation sound

Update playback status for all system sound might confuse carkit. Now
only update playback status for navigation sound.

Test: test with carkit
Bug: 143897897
Bug: 138249637
Merged-In: I1c3882879d6576b7c1d9277acdd18d720529d3d6
Change-Id: I1c3882879d6576b7c1d9277acdd18d720529d3d6
1 file changed