[SCSI] iscsi class: add endpoint class

Add sysfs representation for the endpoint, so userspace can match the
host and session to the endpoint. This will allow us to set the host's
parent correctly at host creation time.

The next patches will convert tcp and iser, and fix iser's dma_mask
bug.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
diff --git a/include/scsi/iscsi_if.h b/include/scsi/iscsi_if.h
index 801a677..a0f13a2 100644
--- a/include/scsi/iscsi_if.h
+++ b/include/scsi/iscsi_if.h
@@ -80,7 +80,7 @@
 			uint16_t	queue_depth;
 		} c_session;
 		struct msg_create_bound_session {
-			uint32_t	host_no;
+			uint64_t	ep_handle;
 			uint32_t	initial_cmdsn;
 			uint16_t	cmds_max;
 			uint16_t	queue_depth;