rtp: Use osmocom/netif/rtp.h for the rtp structure definition
We depend on libosmo-netif unconditionally. Let's use this
definition of rtp and have one portability issue less.
diff --git a/openbsc/src/libmgcp/mgcp_network.c b/openbsc/src/libmgcp/mgcp_network.c
index c3f43dd..07e1515 100644
--- a/openbsc/src/libmgcp/mgcp_network.c
+++ b/openbsc/src/libmgcp/mgcp_network.c
@@ -25,6 +25,8 @@
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
+#include <time.h>
+#include <limits.h>
#include <sys/socket.h>
#include <arpa/inet.h>
@@ -32,9 +34,10 @@
#include <osmocom/core/msgb.h>
#include <osmocom/core/select.h>
+#include <osmocom/netif/rtp.h>
+
#include <openbsc/mgcp.h>
#include <openbsc/mgcp_internal.h>
-#include <openbsc/rtp.h>
#include <openbsc/osmux.h>