examples/l2fwd-crypto: fix port mask overflow

Coverity flags an issue with 32-bit value. If max ethports value is
configured with a value larger than 32 there will be an issue.
Coverity issue: 375863 Unintentional integer overflow

Fixes: 387259b ("examples/l2fwd-crypto: add sample application")
Cc: stable@dpdk.org

Signed-off-by: Brian Dooley <brian.dooley@intel.com>
Acked-by: Akhil Goyal <gakhil@marvell.com>

examples/l2fwd-crypto/main.c

@@ -2719,7 +2719,7 @@ initialize_ports(struct l2fwd_crypto_options *options)
 			last_portid = portid;
 		}
 
-		l2fwd_enabled_port_mask |= (1 << portid);
+		l2fwd_enabled_port_mask |= (1ULL << portid);
 		enabled_portcount++;
 	}