bts_features: Add new feature to indicate support for temporary overpower

To indicate to the BSC that a BTS supports temporary overpower of
SACCH/FACCH channels a new feature BTS_FEAT_ACCH_TOP is added.

Change-Id: I62fbfc30acd5d67b20727b75a8f256e6b5d31e06
Related: SYS#5319
diff --git a/src/gsm/bts_features.c b/src/gsm/bts_features.c
index ecb5700..614758b 100644
--- a/src/gsm/bts_features.c
+++ b/src/gsm/bts_features.c
@@ -47,6 +47,7 @@
 	{ BTS_FEAT_ABIS_OSMO_PCU,	"OsmoPCU over OML link IPA multiplex" },
 	{ BTS_FEAT_BCCH_POWER_RED,	"BCCH carrier power reduction mode" },
 	{ BTS_FEAT_DYN_TS_SDCCH8,	"Dynamic Timeslot configuration as SDCCH8" },
+	{ BTS_FEAT_ACCH_TEMP_OVP,	"FACCH/SACCH Temporary overpower" },
 	{ 0, NULL }
 };