Fix library dependencies for VtsHalAudio tests

Move system-only libraries to 'static_libs',
move 'libxml2' to 'shared_libs'.

Bug: 169605640
Test: atest VtsHalAudioV6_0TargetTest
Change-Id: I1bb8c800704aa25c395164ee7d95d4508dcfbfae
1 file changed