drivers/target: Add module.h to drivers/target files as required.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c
index 4d01768..cbab917 100644
--- a/drivers/target/iscsi/iscsi_target.c
+++ b/drivers/target/iscsi/iscsi_target.c
@@ -22,6 +22,7 @@
 #include <linux/kthread.h>
 #include <linux/crypto.h>
 #include <linux/completion.h>
+#include <linux/module.h>
 #include <asm/unaligned.h>
 #include <scsi/scsi_device.h>
 #include <scsi/iscsi_proto.h>