bts_features: add missing description for BTS_FEAT_ACCH_REP

Change-Id: Ie1d7f00b1bed43c41274bba4ce767a61cd71bb61
Fixes: Ib4d1d8d8a1a1d58bc320a1c0eff2d52100267f09
diff --git a/src/gsm/bts_features.c b/src/gsm/bts_features.c
index 9a5188b..93703aa 100644
--- a/src/gsm/bts_features.c
+++ b/src/gsm/bts_features.c
@@ -41,6 +41,7 @@
 	{ BTS_FEAT_ETWS_PN,		"ETWS Primary Notification via PCH" },
 	{ BTS_FEAT_PAGING_COORDINATION,	"BSS Paging Coordination" },
 	{ BTS_FEAT_IPV6_NSVC,		"NSVC IPv6" },
+	{ BTS_FEAT_ACCH_REP,		"FACCH/SACCH Repeation" },
 	{ 0, NULL }
 };