nat: Move the IMSI/TMSI filtering to a new and dedicated file
Move all routines related to filtering to a separate file.
diff --git a/openbsc/src/osmo-bsc_nat/Makefile.am b/openbsc/src/osmo-bsc_nat/Makefile.am
index 8d9f732..d1a9bd5 100644
--- a/openbsc/src/osmo-bsc_nat/Makefile.am
+++ b/openbsc/src/osmo-bsc_nat/Makefile.am
@@ -6,7 +6,8 @@
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_ctrl.c bsc_nat_rewrite.c
+ bsc_nat_vty.c bsc_sccp.c bsc_ussd.c bsc_nat_ctrl.c \
+ bsc_nat_rewrite.c bsc_nat_filter.c
osmo_bsc_nat_LDADD = $(top_builddir)/src/libcommon/libcommon.a \
$(top_builddir)/src/libmgcp/libmgcp.a \
$(top_builddir)/src/libbsc/libbsc.a \