stp: osmo-stp.cfg: Fix missing ASP relation in AS

Change-Id: Idcfbff548076abc17f0f6c9b13a820c8ef3033e1
diff --git a/stp/osmo-stp.cfg b/stp/osmo-stp.cfg
index d8630d2..5a1741f 100644
--- a/stp/osmo-stp.cfg
+++ b/stp/osmo-stp.cfg
@@ -55,6 +55,7 @@
   routing-key 1023 23
  as as-receiver m3ua
   asp asp-receiver0
+  asp asp-receiver1
   routing-key 1042 42
  as mahlzeit ipa
   routing-key 0 5