Apply version-script to libaaudio library.

In previous attempt it was mistakenly applied to cc_library_header
instead of the actual library. Do it correctly this time.
The intention of this change is to hide unintentionally
exported symbols from the library.

Bug: http://b/69603741
Test: make
Change-Id: I47967abea0b39aec05e80823c9eb3fe53f9fa591
diff --git a/media/libaaudio/Android.bp b/media/libaaudio/Android.bp
index 4857008..c967331 100644
--- a/media/libaaudio/Android.bp
+++ b/media/libaaudio/Android.bp
@@ -24,7 +24,7 @@
 ndk_library {
     name: "libaaudio",
     // deliberately includes symbols from AAudioTesting.h
-    symbol_file: "libaaudio.map.txt",
+    symbol_file: "src/libaaudio.map.txt",
     first_version: "26",
     unversioned_until: "current",
 }
@@ -32,7 +32,6 @@
 cc_library_headers {
     name: "libaaudio_headers",
     export_include_dirs: ["include"],
-    version_script: "libaaudio.map.txt",
 }
 
 subdirs = ["*"]