Make media_ndk_headers buildable for native_bridge

Bug: http://b/153609531

Test: m libRS.native_bridge

Change-Id: Icf9e789e46ed1bcf660230e3011e88fa5e933fb5
diff --git a/media/ndk/Android.bp b/media/ndk/Android.bp
index 13791c9..20a68db 100644
--- a/media/ndk/Android.bp
+++ b/media/ndk/Android.bp
@@ -35,6 +35,8 @@
 cc_library_headers {
     name: "media_ndk_headers",
     vendor_available: true,
+    // TODO(b/153609531): remove when no longer needed.
+    native_bridge_supported: true,
     apex_available: [
         "//apex_available:platform",
         "com.android.media",