bsc: Move the osmo_bsc_rf file into the libbsc code and rename

The nitb will provide the RF interface as well.
diff --git a/openbsc/src/libbsc/Makefile.am b/openbsc/src/libbsc/Makefile.am
index 4cf1fab..6f170e0 100644
--- a/openbsc/src/libbsc/Makefile.am
+++ b/openbsc/src/libbsc/Makefile.am
@@ -21,5 +21,5 @@
 			e1_config.c \
 			bsc_api.c bsc_msc.c bsc_vty.c \
 			gsm_04_08_utils.c \
-			bsc_init.c bts_init.c
+			bsc_init.c bts_init.c bsc_rf_ctrl.c
 
diff --git a/openbsc/src/osmo-bsc/osmo_bsc_rf.c b/openbsc/src/libbsc/bsc_rf_ctrl.c
similarity index 100%
rename from openbsc/src/osmo-bsc/osmo_bsc_rf.c
rename to openbsc/src/libbsc/bsc_rf_ctrl.c
diff --git a/openbsc/src/osmo-bsc/Makefile.am b/openbsc/src/osmo-bsc/Makefile.am
index ea74c78..8f7d25b 100644
--- a/openbsc/src/osmo-bsc/Makefile.am
+++ b/openbsc/src/osmo-bsc/Makefile.am
@@ -5,7 +5,7 @@
 bin_PROGRAMS = osmo-bsc
 
 
-osmo_bsc_SOURCES = osmo_bsc_main.c osmo_bsc_rf.c osmo_bsc_vty.c osmo_bsc_api.c \
+osmo_bsc_SOURCES = osmo_bsc_main.c osmo_bsc_vty.c osmo_bsc_api.c \
 		   osmo_bsc_grace.c osmo_bsc_msc.c osmo_bsc_sccp.c \
 		   osmo_bsc_filter.c osmo_bsc_bssap.c osmo_bsc_audio.c
 # once again since TRAU uses CC symbol :(