fix some "implicit declaration" warnings in libtrau
diff --git a/openbsc/src/libtrau/rtp_proxy.c b/openbsc/src/libtrau/rtp_proxy.c
index 2aa3a1e..3d34ac6 100644
--- a/openbsc/src/libtrau/rtp_proxy.c
+++ b/openbsc/src/libtrau/rtp_proxy.c
@@ -35,6 +35,7 @@
#include <openbsc/debug.h>
#include <openbsc/rtp_proxy.h>
#include <openbsc/mncc.h>
+#include <openbsc/trau_upqueue.h>
/* attempt to determine byte order */
#include <sys/param.h>
diff --git a/openbsc/src/libtrau/trau_mux.c b/openbsc/src/libtrau/trau_mux.c
index 6a6b7c5..3260ff5 100644
--- a/openbsc/src/libtrau/trau_mux.c
+++ b/openbsc/src/libtrau/trau_mux.c
@@ -29,6 +29,7 @@
#include <osmocom/abis/e1_input.h>
#include <openbsc/debug.h>
#include <osmocom/core/talloc.h>
+#include <openbsc/trau_upqueue.h>
/* this corresponds to teh bit-lengths of the individual codec
* parameters as indicated in Table 1.1 of TS 06.10 */