mboxd: Rename mboxd_msg to transport_mbox

Change-Id: I0f4e206648c02a98fa938a7e582470c8d90904f1
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
diff --git a/control.c b/control.c
index 5b20a28..c9956e9 100644
--- a/control.c
+++ b/control.c
@@ -7,7 +7,7 @@
 #include "mbox.h"
 #include "flash.h"
 #include "lpc.h"
-#include "mboxd_msg.h"
+#include "transport_mbox.h"
 #include "windows.h"
 
 int control_ping(struct mbox_context *context)