fix missing includes and forward declarations

Change-Id: I669e475f7ab74abef85f0f6194cc37db04af62e3
diff --git a/include/osmocom/mgcp/mgcp_endp.h b/include/osmocom/mgcp/mgcp_endp.h
index b6bd7b3..f687bae 100644
--- a/include/osmocom/mgcp/mgcp_endp.h
+++ b/include/osmocom/mgcp/mgcp_endp.h
@@ -25,6 +25,7 @@
 
 #include <osmocom/core/msgb.h>
 #include <osmocom/gsm/i460_mux.h>
+#include <osmocom/mgcp/mgcp_protocol.h>
 
 struct sockaddr;
 struct mgcp_conn;
diff --git a/include/osmocom/mgcp/mgcp_msg.h b/include/osmocom/mgcp/mgcp_msg.h
index 87987d3..9572d39 100644
--- a/include/osmocom/mgcp/mgcp_msg.h
+++ b/include/osmocom/mgcp/mgcp_msg.h
@@ -25,10 +25,12 @@
 #pragma once
 
 #include <stdint.h>
+#include <stdbool.h>
 
 struct mgcp_conn;
 struct mgcp_parse_data;
 struct mgcp_endpoint;
+struct mgcp_trunk;
 
 void mgcp_disp_msg(unsigned char *message, unsigned int len, char *preamble);
 
diff --git a/include/osmocom/mgcp/mgcp_trunk.h b/include/osmocom/mgcp/mgcp_trunk.h
index d960428..3f14f97 100644
--- a/include/osmocom/mgcp/mgcp_trunk.h
+++ b/include/osmocom/mgcp/mgcp_trunk.h
@@ -2,6 +2,8 @@
 
 #include <osmocom/gsm/i460_mux.h>
 #include <osmocom/abis/e1_input.h>
+#include <osmocom/mgcp/mgcp_ratectr.h>
+
 
 #define LOGPTRUNK(trunk, cat, level, fmt, args...) \
 LOGP(cat, level, "trunk:%u " fmt, \