system/media build with BOARD_VNDK_VERSION

Bug: 37342627
Test: cd system/media && mma -j64 -k BOARD_VNDK_VERSION=current
Change-Id: I7f99fbe685a960f0506398cdb21a7d86d1d8d4a1
diff --git a/audio_utils/Android.bp b/audio_utils/Android.bp
index bde8b4a..f0f0097 100644
--- a/audio_utils/Android.bp
+++ b/audio_utils/Android.bp
@@ -35,10 +35,12 @@
 
     header_libs: [
         "libaudio_system_headers",
+        "libutils_headers",
     ],
 
     export_header_lib_headers: [
         "libaudio_system_headers",
+        "libutils_headers",
     ],
 
     shared_libs: [