Audio VTS: Create utility lib

Move code that can be reuse between audio tests of the HIDL interface in
an utility library.

Test: run vts tests
Test: vts-tradefed run vts --module VtsHalAudioV2_0Target
Bug: 35700978

Change-Id: Ia930ad2b0a3ca31628b2cb767b265d54b210756b
Signed-off-by: Kevin Rocard <krocard@google.com>
diff --git a/audio/2.0/vts/functional/Android.bp b/audio/2.0/vts/functional/Android.bp
index d72fb2c..daae738 100644
--- a/audio/2.0/vts/functional/Android.bp
+++ b/audio/2.0/vts/functional/Android.bp
@@ -18,8 +18,7 @@
     name: "VtsHalAudioV2_0TargetTest",
     defaults: ["hidl_defaults"],
     srcs: ["AudioPrimaryHidlHalTest.cpp",
-           "ValidateAudioConfiguration.cpp",
-           "utility/ValidateXml.cpp"],
+           "ValidateAudioConfiguration.cpp"],
     shared_libs: [
         "libbase",
         "liblog",
@@ -30,6 +29,7 @@
         "libxml2",
         "android.hardware.audio@2.0",
         "android.hardware.audio.common@2.0",
+        "android.hardware.audio.common.test.utility",
     ],
     static_libs: ["VtsHalHidlTargetTestBase"],
     cflags: [