binder: Enable TLS for binderRpcTest

Test: binderRpcTest
Bug: 190868302

Change-Id: I06fcf3dd5d91ed073153b25aecf4612040ef11b1
diff --git a/libs/binder/Android.bp b/libs/binder/Android.bp
index 72d8afd..dd3f56d 100644
--- a/libs/binder/Android.bp
+++ b/libs/binder/Android.bp
@@ -271,6 +271,15 @@
     defaults: ["libbinder_tls_defaults"],
 }
 
+// For testing
+cc_library_static {
+    name: "libbinder_tls_static",
+    defaults: ["libbinder_tls_defaults"],
+    visibility: [
+        ":__subpackages__",
+    ],
+}
+
 // AIDL interface between libbinder and framework.jar
 filegroup {
     name: "libbinder_aidl",