Added libinit_headers to Android.bp

Test: Builds libint_headers
Bug: 218631398

Change-Id: Ia47d3c23cd4d4be7abc618ac1d2bf698f7761446
diff --git a/init/Android.bp b/init/Android.bp
index dd67d04..fc60659 100644
--- a/init/Android.bp
+++ b/init/Android.bp
@@ -202,6 +202,12 @@
     visibility: [":__subpackages__"],
 }
 
+cc_library_headers {
+    name: "libinit_headers",
+    export_include_dirs: ["."],
+    visibility: [":__subpackages__"],
+}
+
 cc_library_static {
     name: "libinit",
     recovery_available: true,