Add explicit apex_available clauses

So we can start deleting the lists embedded in the build tools

Bug: 215589022
Test: build
Change-Id: Iece71cbe0a6752c80b25cf2d3cce9eb376689d05
diff --git a/media/libaudiofoundation/Android.bp b/media/libaudiofoundation/Android.bp
index 727b86f..159f898 100644
--- a/media/libaudiofoundation/Android.bp
+++ b/media/libaudiofoundation/Android.bp
@@ -11,6 +11,10 @@
     name: "libaudiofoundation_headers",
     vendor_available: true,
     min_sdk_version: "29",
+    apex_available: [
+        "//apex_available:platform",
+        "com.android.media",
+    ],
 
     export_include_dirs: ["include"],
     header_libs: [