Update path to package template

Change-Id: Ifbaca2e1a9239e1f1d97933787c7747442d0a5c1
diff --git a/BUILD.gn b/BUILD.gn
index db9dd4a..fbf8939 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -2,7 +2,7 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-import("//packages/package.gni")
+import("//build/package.gni")
 
 executable("tests") {
   output_name = "libc-tests"