Add hidl-module-defaults to libhidltransport.

Core hidl interfaces are built into this module. This module
needs them to inherit the same build rules as every hidl module
in order for these modules to be built the same way.

Bug: 37908609
Test: hidl_test
Change-Id: I4b1e562373fc63f775a660e41e5608ead9f7f394
diff --git a/transport/Android.bp b/transport/Android.bp
index 4e424be..c7bb63b 100644
--- a/transport/Android.bp
+++ b/transport/Android.bp
@@ -26,6 +26,7 @@
 cc_library_shared {
     name: "libhidltransport",
     vendor_available: true,
+    defaults: ["hidl-module-defaults"],
     cflags: libhidl_flags,
     shared_libs: [
         "libbase",