parisc: add module.h to files really requiring it

We want to clean up the implicit everywhere presence of module.h
which means files like this that use module infrastructure need
to explicitly call it out for inclusion.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
diff --git a/drivers/parisc/sba_iommu.c b/drivers/parisc/sba_iommu.c
index a6f7621..8644d53 100644
--- a/drivers/parisc/sba_iommu.c
+++ b/drivers/parisc/sba_iommu.c
@@ -39,6 +39,7 @@
 
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
+#include <linux/module.h>
 
 #include <asm/ropes.h>
 #include <asm/mckinley.h>	/* for proc_mckinley_root */