Enable libharfbuzz_ng for Windows

This is needed to build a native version of layoutlib to use
in Android Studio for Windows.

Test: sdk build
Change-Id: If1966b7ed7bf70618fc96932add475ed310625d3
diff --git a/Android.bp b/Android.bp
index 9b2581b..93ce028 100644
--- a/Android.bp
+++ b/Android.bp
@@ -105,18 +105,22 @@
     target: {
         android: {
             shared_libs: [
+                "libcutils",
                 "libutils",
             ],
         },
         host: {
             static_libs: [
+                "libcutils",
                 "libutils",
             ],
         },
+        windows: {
+            enabled: true,
+        },
     },
 
     shared_libs: [
-        "libcutils",
         "libandroidicu",
         "liblog",
     ],