NTB: Code Style Clean-up

Some white space and 80 char overruns corrected.

Signed-off-by: Jon Mason <jon.mason@intel.com>
diff --git a/drivers/ntb/ntb_hw.h b/drivers/ntb/ntb_hw.h
index d1960ff..923a0fbb 100644
--- a/drivers/ntb/ntb_hw.h
+++ b/drivers/ntb/ntb_hw.h
@@ -231,7 +231,7 @@
 							   int db_num));
 void ntb_unregister_db_callback(struct ntb_device *ndev, unsigned int idx);
 int ntb_register_event_callback(struct ntb_device *ndev,
-				void (*event_cb_func) (void *handle,
+				void (*event_cb_func)(void *handle,
 						      enum ntb_hw_event event));
 void ntb_unregister_event_callback(struct ntb_device *ndev);
 int ntb_get_max_spads(struct ntb_device *ndev);