Add the missing params to the param string.

Fixes: 39cac2adcad0 ("net/vhost: add client option")
Fixes: 4ce97c6f6b4f ("net/vhost: add an option to enable dequeue zero copy")
Fixes: 447e0d379756 ("net/vhost: add parameter to enable IOMMU feature")
Fixes: 6d6e95cec455 ("net/vhost: add parameter to enable postcopy")
Cc: stable@dpdk.org

Signed-off-by: Tiwei Bie <redacted>
---
  drivers/net/vhost/rte_eth_vhost.c | 6 +++++-
  1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/net/vhost/rte_eth_vhost.c b/drivers/net/vhost/rte_eth_vhost.c
index 55e51c89a..07a9c2598 100644
--- a/drivers/net/vhost/rte_eth_vhost.c
+++ b/drivers/net/vhost/rte_eth_vhost.c

@@ -1470,7 +1470,11 @@ RTE_PMD_REGISTER_VDEV(net_vhost, pmd_vhost_drv);
  RTE_PMD_REGISTER_ALIAS(net_vhost, eth_vhost);
  RTE_PMD_REGISTER_PARAM_STRING(net_vhost,
  	"iface=<ifc> "
-	"queues=<int>");
+	"queues=<int> "
+	"client=<0|1> "
+	"dequeue-zero-copy=<0|1> "
+	"iommu-support=<0|1> "
+	"postcopy-support=<0|1>");
  
  RTE_INIT(vhost_init_log)
  {