add rsl_or_ipac_msg_name() for both standard and ip.access msg types

Context: in osmo-bts, I want to look up an RSL message name in rsl_msgt_names
and fall back to rsl_ipac_msgt_names if not found, because the IPAC PDCH ACT
and DEACT messages are sent in a standard ABIS_RSL_MDISC_DED_CHAN.

Change-Id: Ic9ba721a1469cf51aed97ab0f44a7fe055c94b1f
Reviewed-on: https://gerrit.osmocom.org/231
Reviewed-by: Harald Welte <laforge@gnumonks.org>
Tested-by: Jenkins Builder
diff --git a/src/gsm/libosmogsm.map b/src/gsm/libosmogsm.map
index 301f5aa..ea2101c 100644
--- a/src/gsm/libosmogsm.map
+++ b/src/gsm/libosmogsm.map
@@ -266,6 +266,7 @@
 rsl_init_rll_hdr;
 rsl_ipac_msg_name;
 rsl_msg_name;
+rsl_or_ipac_msg_name;
 rsl_rll_push_hdr;
 rsl_rll_push_l3;
 rsl_rll_simple;