Move android_reset_stack_guard to LIBC_S

Test: Declare as external and compile
Bug: 168258494
Change-Id: I32d1c0cc6c150b440baeac458d7753445036b455
diff --git a/libc/libc.map.txt b/libc/libc.map.txt
index c31e306..8ede380 100644
--- a/libc/libc.map.txt
+++ b/libc/libc.map.txt
@@ -1556,6 +1556,7 @@
     __libc_register_thread_exit_callback;
     __libc_iterate_dynamic_tls;
     __libc_register_dynamic_tls_listeners;
+    android_reset_stack_guards;
     ffsl;
     ffsll;
     pidfd_getfd;
@@ -1776,5 +1777,4 @@
     android_net_res_stats_get_info_for_net;
     android_net_res_stats_aggregate;
     android_net_res_stats_get_usable_servers;
-    android_reset_stack_guards;
 } LIBC_Q;