[SCSI] cxgb4i v5: iscsi driver

Added cxgb4i iSCSI driver.

This patch implements the cxgb4i iscsi connection acceleration for the
open-iscsi initiator.

The cxgb4i driver offers the iscsi PDU based offload:
- digest insertion and verification
- payload direct-placement into host memory buffer.

Signed-off-by: Karen Xie <kxie@chelsio.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig
index bbf91ae..bee3aef 100644
--- a/drivers/scsi/Kconfig
+++ b/drivers/scsi/Kconfig
@@ -379,6 +379,7 @@
 	  say Y. Otherwise, say N.
 
 source "drivers/scsi/cxgb3i/Kconfig"
+source "drivers/scsi/cxgbi/Kconfig"
 source "drivers/scsi/bnx2i/Kconfig"
 source "drivers/scsi/be2iscsi/Kconfig"