nat: Move the ctrl handling code into a separate file
Move to the control command handling out of the main file into
a dedicated module. There are still some calls embedded into the
main code but it will be moved soon.
diff --git a/openbsc/src/osmo-bsc_nat/Makefile.am b/openbsc/src/osmo-bsc_nat/Makefile.am
index 306df6d..d5b06da 100644
--- a/openbsc/src/osmo-bsc_nat/Makefile.am
+++ b/openbsc/src/osmo-bsc_nat/Makefile.am
@@ -6,7 +6,7 @@
osmo_bsc_nat_SOURCES = bsc_filter.c bsc_mgcp_utils.c bsc_nat.c bsc_nat_utils.c \
- bsc_nat_vty.c bsc_sccp.c bsc_ussd.c
+ bsc_nat_vty.c bsc_sccp.c bsc_ussd.c bsc_nat_ctrl.c
osmo_bsc_nat_LDADD = $(top_builddir)/src/libcommon/libcommon.a \
$(top_builddir)/src/libmgcp/libmgcp.a \
$(top_builddir)/src/libbsc/libbsc.a \