Build go_extractor

Bug: 137798757
Test: build go_extractor, verify it works
Change-Id: Icc06400af02ad839c88c11d1df88891272bdfc62
diff --git a/build-prebuilts.sh b/build-prebuilts.sh
index 514565d..6cb5812 100755
--- a/build-prebuilts.sh
+++ b/build-prebuilts.sh
@@ -42,6 +42,7 @@
         ckati_stamp_dump
         flex
         gavinhoward-bc
+        go_extractor
         hidl-lint
         m4
         make