rbs2000: Add missing bts feature definitions

function bts_model_rbs2k_start() in bts_ericsson_rbs2000.c lacks
the feature definition for GPRS and EGPRS.

Change-Id: I777a67862084aa6cca39cfc43f5708e47608b0e6
diff --git a/openbsc/src/libbsc/bts_ericsson_rbs2000.c b/openbsc/src/libbsc/bts_ericsson_rbs2000.c
index faf6f05..1abf4a3 100644
--- a/openbsc/src/libbsc/bts_ericsson_rbs2000.c
+++ b/openbsc/src/libbsc/bts_ericsson_rbs2000.c
@@ -182,6 +182,8 @@
 	model_rbs2k.features.data = &model_rbs2k._features_data[0];
 	model_rbs2k.features.data_len = sizeof(model_rbs2k._features_data);
 
+	gsm_btsmodel_set_feature(&model_rbs2k, BTS_FEAT_GPRS);
+	gsm_btsmodel_set_feature(&model_rbs2k, BTS_FEAT_EGPRS);
 	gsm_btsmodel_set_feature(&model_rbs2k, BTS_FEAT_HOPPING);
 	gsm_btsmodel_set_feature(&model_rbs2k, BTS_FEAT_HSCSD);
 	gsm_btsmodel_set_feature(&model_rbs2k, BTS_FEAT_MULTI_TSC);