Add libandroidicu as static lib in the VtsHalAudio

VtsHalAudio statically links libxml2.
libxml2 depends on libandroidicu now,
and it should statically links libandroidicu as well.

TODO: b/121468463 to remove ICU from VtsHalAudio

Bug: 117094880
Test: m checkbuild
Change-Id: I105e7ad1517ecf8780adfb730650e1ad82f65857
diff --git a/audio/effect/all-versions/vts/functional/Android.bp b/audio/effect/all-versions/vts/functional/Android.bp
index 88d49d8..de6cad9 100644
--- a/audio/effect/all-versions/vts/functional/Android.bp
+++ b/audio/effect/all-versions/vts/functional/Android.bp
@@ -28,6 +28,7 @@
         "libeffectsconfig",
         "libicuuc",
         "libicuuc_stubdata",
+        "libandroidicu",
         "libxml2",
     ],
     header_libs: [