cxgb4: Allocate Tx queues dynamically

Allocate resources dynamically for Upper layer driver's (ULD) like
cxgbit, iw_cxgb4, cxgb4i and chcr. The resources allocated include Tx
queues which are allocated when ULD register with cxgb4 driver and freed
while un-registering. The Tx queues which are shared by ULD shall be
allocated by first registering driver and un-allocated by last
unregistering driver.

Signed-off-by: Atul Gupta <atul.gupta@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/target/iscsi/cxgbit/cxgbit_main.c

@@ -653,6 +653,7 @@ static struct iscsit_transport cxgbit_transport = {
 static struct cxgb4_uld_info cxgbit_uld_info = {
 	.name		= DRV_NAME,
 	.nrxq		= MAX_ULD_QSETS,
+	.ntxq		= MAX_ULD_QSETS,
 	.rxq_size	= 1024,
 	.lro		= true,
 	.add		= cxgbit_uld_add,