net/cxgbe: announce Tx multi-segments offload

Multi-segs Tx is already supported by CXGBE PMD. So, add the missing
DEV_TX_OFFLOAD_MULTI_SEGS flag to the list of supported Tx offload
features.

Fixes: 436125e ("net/cxgbe: update to Rx/Tx offload API")
Cc: stable@dpdk.org

Reported-by: Chas Williams <3chas3@gmail.com>
Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>

drivers/net/cxgbe/cxgbe.h

@@ -40,7 +40,8 @@
 			   DEV_TX_OFFLOAD_IPV4_CKSUM | \
 			   DEV_TX_OFFLOAD_UDP_CKSUM | \
 			   DEV_TX_OFFLOAD_TCP_CKSUM | \
-			   DEV_TX_OFFLOAD_TCP_TSO)
+			   DEV_TX_OFFLOAD_TCP_TSO | \
+			   DEV_TX_OFFLOAD_MULTI_SEGS)
 
 #define CXGBE_RX_OFFLOADS (DEV_RX_OFFLOAD_VLAN_STRIP | \
 			   DEV_RX_OFFLOAD_IPV4_CKSUM | \