gui: add hidl hybrid interface as libgui header dependency

Bug: 129710438
Change-Id: I848a8c2f225920886883c23d5defd38fef5b8951
diff --git a/libs/gui/Android.bp b/libs/gui/Android.bp
index a615fbf..3f8b436 100644
--- a/libs/gui/Android.bp
+++ b/libs/gui/Android.bp
@@ -15,6 +15,10 @@
     name: "libgui_headers",
     vendor_available: true,
     export_include_dirs: ["include"],
+
+    // we must build this module to get the required header as that is generated
+    export_shared_lib_headers: [ "android.hidl.token@1.0-utils" ],
+    shared_libs: [ "android.hidl.token@1.0-utils" ],
 }
 
 cc_library_shared {