cosmetic: rename function .._conn_reset() to .._conn_init()

We do allocate connections dynamically and we initialize them
once by calling mgcp_rtp_conn_reset(). Calling this a reset
function implies that the reset happens multiple times while
the struct lives. This is not tha case, so lets change the
suffix to _init()

- rename mgcp_rtp_conn_reset() to mgcp_rtp_conn_init()

Change-Id: Ie48b575ff81c8f48afcc25f485967e011e90027b
diff --git a/include/osmocom/mgcp/mgcp_internal.h b/include/osmocom/mgcp/mgcp_internal.h
index e4009e8..0da2c56 100644
--- a/include/osmocom/mgcp/mgcp_internal.h
+++ b/include/osmocom/mgcp/mgcp_internal.h
@@ -27,6 +27,7 @@
 #include <osmocom/core/select.h>
 #include <osmocom/mgcp/mgcp.h>
 #include <osmocom/core/linuxlist.h>
+#include <osmocom/core/counter.h>
 
 #define CI_UNUSED 0