dpdk: remove rte_mbuf modifications at many places in the code

It is sole responsibility of dpdk tx function to fill/update
rte_mbuf prior to sending packet do PMD.

Change-Id: I8ca1dba3e7bef41034d36e3525831849f7ac4ac0
Signed-off-by: Damjan Marion <damarion@cisco.com>
diff --git a/vpp-api-test/vat/api_format.c b/vpp-api-test/vat/api_format.c
index 549bd03..67280df 100644
--- a/vpp-api-test/vat/api_format.c
+++ b/vpp-api-test/vat/api_format.c
@@ -54,6 +54,7 @@
 
 #include "vat/json_format.h"
 
+#include <inttypes.h>
 #include <sys/stat.h>
 
 #define vl_typedefs		/* define message structures */