Make libbinder buildable for native_bridge

Bug: http://b/153609531

Test: m libbinder.native_bridge

Change-Id: I3955d9b54aaea7a6b5b9bde81a336908a849cde6
diff --git a/libs/binder/Android.bp b/libs/binder/Android.bp
index 290a3a6..44f2b38 100644
--- a/libs/binder/Android.bp
+++ b/libs/binder/Android.bp
@@ -17,6 +17,8 @@
     export_include_dirs: ["include"],
     vendor_available: true,
     host_supported: true,
+    // TODO(b/153609531): remove when no longer needed.
+    native_bridge_supported: true,
 
     header_libs: [
         "libbase_headers",
@@ -62,6 +64,8 @@
     },
     double_loadable: true,
     host_supported: true,
+    // TODO(b/153609531): remove when no longer needed.
+    native_bridge_supported: true,
 
     // TODO(b/31559095): get headers from bionic on host
     include_dirs: [