fio: factor out FIO_NET_PORT

Signed-off-by: Stephen M. Cameron <stephenmcameron@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/server.c b/server.c
index 84b106e..2e8682c 100644
--- a/server.c
+++ b/server.c
@@ -24,7 +24,7 @@
 
 #include "fio_version.h"
 
-int fio_net_port = 8765;
+int fio_net_port = FIO_NET_PORT;
 
 int exit_backend = 0;