ssb: Add module.h to the real modules in drivers/ssb

The header cleanup means that module.h is no longer simply
everywhere.  So real modules need to actively include it.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
diff --git a/drivers/ssb/b43_pci_bridge.c b/drivers/ssb/b43_pci_bridge.c
index bf53e44..bad7ba5 100644
--- a/drivers/ssb/b43_pci_bridge.c
+++ b/drivers/ssb/b43_pci_bridge.c
@@ -11,6 +11,7 @@
  */
 
 #include <linux/pci.h>
+#include <linux/module.h>
 #include <linux/ssb/ssb.h>
 
 #include "ssb_private.h"