Fix syscall build error.

jfb8856606 · jfb8856606 · commit 84ddaf1836b0 · 2026-04-20T20:23:42.000+08:00
diff --git a/lib/ff_api.symlist b/lib/ff_api.symlist
@@ -56,6 +56,7 @@ ff_next_mbuf
 ff_mbuf_mtod
 ff_rte_frm_extcl
 ff_mbuf_set_vlan_info
+ff_mbuf_set_timestamp
 ff_zc_mbuf_get
 ff_zc_mbuf_write
 ff_zc_mbuf_read
