ibmvscsis: Initial commit of IBM VSCSI Tgt Driver

This driver is a pick up of the old IBM VIO scsi Target Driver
that was started by Nick and Fujita 2-4 years ago.
http://comments.gmane.org/gmane.linux.scsi/90119

The driver provides a virtual SCSI device on IBM Power Servers.

This patch contains the fifth version for an initial merge of the
tcm ibmvscsis driver. More information on this driver and config
can be found:

https://github.com/powervm/ibmvscsis/wiki/Configuration
http://www.linux-iscsi.org/wiki/IBM_vSCSI

(Drop extra libsrp review breakage + Fix kconfig typo - nab)

Signed-off-by: Steven Royer <seroyer@linux.vnet.ibm.com>
Signed-off-by: Tyrel Datwyler <tyreld@linux.vnet.ibm.com>
Signed-off-by: Michael Cyr <mikecyr@linux.vnet.ibm.com>
Signed-off-by: Bryant G. Ly <bryantly@linux.vnet.ibm.com>
Cc: FUJITA Tomonori <tomof@acm.org>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

drivers/scsi/Kconfig

@@ -838,6 +838,23 @@ config SCSI_IBMVSCSI
 	  To compile this driver as a module, choose M here: the
 	  module will be called ibmvscsi.
 
+config SCSI_IBMVSCSIS
+	tristate "IBM Virtual SCSI Server support"
+	depends on PPC_PSERIES && TARGET_CORE && SCSI && PCI
+	help
+	  This is the IBM POWER Virtual SCSI Target Server
+	  This driver uses the SRP protocol for communication betwen servers
+	  guest and/or the host that run on the same server.
+	  More information on VSCSI protocol can be found at www.power.org
+
+	  The userspace configuration needed to initialize the driver can be
+	  be found here:
+
+	  https://github.com/powervm/ibmvscsis/wiki/Configuration
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called ibmvscsis.
+
 config SCSI_IBMVFC
 	tristate "IBM Virtual FC support"
 	depends on PPC_PSERIES && SCSI