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
diff --git a/audio/core/all-versions/vts/functional/Android.bp b/audio/core/all-versions/vts/functional/Android.bp
index 8021bd9..e8b704c 100644
--- a/audio/core/all-versions/vts/functional/Android.bp
+++ b/audio/core/all-versions/vts/functional/Android.bp
@@ -19,13 +19,13 @@
     defaults: ["VtsHalTargetTestDefaults"],
     static_libs: [
         "android.hardware.audio.common.test.utility",
-        "libxml2",
-    ],
-    shared_libs: [
         "audioclient-types-aidl-cpp",
         "libaudioclient_aidl_conversion",
+    ],
+    shared_libs: [
         "libbinder",
         "libfmq",
+        "libxml2",
     ],
     header_libs: [
         "android.hardware.audio.common.util@all-versions",