bluetooth: add module.h to drivers/bluetooth files as required.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
diff --git a/drivers/bluetooth/btwilink.c b/drivers/bluetooth/btwilink.c
index 04d353f..b5f83b4 100644
--- a/drivers/bluetooth/btwilink.c
+++ b/drivers/bluetooth/btwilink.c
@@ -29,6 +29,7 @@
 #include <net/bluetooth/hci.h>
 
 #include <linux/ti_wilink_st.h>
+#include <linux/module.h>
 
 /* Bluetooth Driver Version */
 #define VERSION               "1.0"