Add bufferqueue headers to libgui_headers

This allows some libraries that currently link with libgui, but don't
actually use any symbols from it, to link with libgui_headers instead.

Test: build
Change-Id: I701780a55543889473ad174f25fa761cf5edd452
Merged-In: I701780a55543889473ad174f25fa761cf5edd452
diff --git a/libs/gui/Android.bp b/libs/gui/Android.bp
index 3f8b436..166775b 100644
--- a/libs/gui/Android.bp
+++ b/libs/gui/Android.bp
@@ -17,8 +17,16 @@
     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" ],
+    export_shared_lib_headers: [
+        "android.hidl.token@1.0-utils",
+        "android.hardware.graphics.bufferqueue@1.0",
+        "android.hardware.graphics.bufferqueue@2.0",
+    ],
+    shared_libs: [
+        "android.hidl.token@1.0-utils",
+        "android.hardware.graphics.bufferqueue@1.0",
+        "android.hardware.graphics.bufferqueue@2.0",
+    ],
 }
 
 cc_library_shared {