tlv: Import osmo_shift_* and osmo_match_shift_* from openbsc
These routines have nothing to do with specifically the BSC, so import
them to the TLV parser we keep in libosmogsm.
diff --git a/src/gsm/libosmogsm.map b/src/gsm/libosmogsm.map
index 21d3c29..8bd0dbf 100644
--- a/src/gsm/libosmogsm.map
+++ b/src/gsm/libosmogsm.map
@@ -278,6 +278,12 @@
tvlv_att_def;
vtvlv_gan_att_def;
+osmo_shift_v_fixed;
+osmo_match_shift_tv_fixed;
+osmo_shift_tlv;
+osmo_match_shift_tlv;
+osmo_shift_lv;
+
gan_msgt_vals;
gan_pdisc_vals;