[SCSI] libiscsi: Added support to show targetalias in sysfs

sysfs patch to view target alias:
  /sys/class/iscsi_session/session*/targetalias

Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
diff --git a/include/scsi/libiscsi.h b/include/scsi/libiscsi.h
index cedcff3..2e42e9a 100644
--- a/include/scsi/libiscsi.h
+++ b/include/scsi/libiscsi.h
@@ -284,6 +284,7 @@
 	char			*password;
 	char			*password_in;
 	char			*targetname;
+	char			*targetalias;
 	char			*ifacename;
 	char			*initiatorname;
 	/* control data */