infiniband: Fix up module files that need to include module.h

They had been getting it implicitly via device.h but we can't
rely on that for the future, due to a pending cleanup so fix
it now.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
diff --git a/drivers/infiniband/ulp/iser/iscsi_iser.c b/drivers/infiniband/ulp/iser/iscsi_iser.c
index 84e8c29..5263107 100644
--- a/drivers/infiniband/ulp/iser/iscsi_iser.c
+++ b/drivers/infiniband/ulp/iser/iscsi_iser.c
@@ -57,6 +57,7 @@
 #include <linux/scatterlist.h>
 #include <linux/delay.h>
 #include <linux/slab.h>
+#include <linux/module.h>
 
 #include <net/sock.h>