libgrallocmapperincludes: as header lib and vendor

Bug: 33241851
Test: links
Test: try build with BOARD_VNDK_VERSION current, no errors related to
  this module
Test: (sanity) YouTube

Change-Id: Ia2c3922bf8bf1ab51396a8c8c5fa8d909c442994
diff --git a/graphics/allocator/2.0/default/Android.bp b/graphics/allocator/2.0/default/Android.bp
index 6adfa71..4a7cfe0 100644
--- a/graphics/allocator/2.0/default/Android.bp
+++ b/graphics/allocator/2.0/default/Android.bp
@@ -15,7 +15,9 @@
         "liblog",
         "libutils",
     ],
-    static_libs: ["libgrallocmapperincludes"],
+    header_libs: [
+        "libgrallocmapperincludes",
+    ],
 }
 
 cc_binary {