ethdev: fix missing header include

[ upstream commit ebbd4d3 ]

The define for RTE_ETH_FLOW_MAX is defined in rte_ethdev.h, so that
header should be included in rte_eth_ctrl.h to allow it to be compiled
independently.

Fixes: 7fa96d6 ("ethdev: unification of flow types")

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
Reviewed-by: David Marchand <david.marchand@redhat.com>

lib/librte_ethdev/rte_eth_ctrl.h

@@ -9,6 +9,7 @@
 #include <rte_common.h>
 #include <rte_ether.h>
 #include "rte_flow.h"
+#include "rte_ethdev.h"
 
 /**
  * @deprecated Please use rte_flow API instead of this legacy one.