gsm: bts_features: Add missing entries to osmo_bts_features_names

Those features were present in osmo_bts_features_descs but not in
osmo_bts_features_names.

Change-Id: Ic8162e7ab6b657de694e3825e694e9b18c540271
diff --git a/src/gsm/bts_features.c b/src/gsm/bts_features.c
index 785ad8a..6811038 100644
--- a/src/gsm/bts_features.c
+++ b/src/gsm/bts_features.c
@@ -78,5 +78,7 @@
 	{ BTS_FEAT_ABIS_OSMO_PCU, "ABIS_OSMO_PCU" },
 	{ BTS_FEAT_BCCH_POWER_RED, "BCCH_PWR_RED" },
 	{ BTS_FEAT_DYN_TS_SDCCH8, "DYN_TS_SDCCH8" },
+	{ BTS_FEAT_ACCH_TEMP_OVP, "ACCH_TEMP_OVP" },
+	{ BTS_FEAT_OSMUX, "OSMUX" },
 	{}
 };