staging/android: add DEBUG_FS dependence on Kconfig

SW_SYNC only works with DEBUG_FS so state it in the Kconfig file.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Sumit Semwal <sumit.semwal@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/staging/android/sync_debug.h b/drivers/staging/android/sync_debug.h
index 48e2d1c..425ebc5 100644
--- a/drivers/staging/android/sync_debug.h
+++ b/drivers/staging/android/sync_debug.h
@@ -41,9 +41,7 @@
 
 	struct list_head	active_list_head;
 
-#ifdef CONFIG_DEBUG_FS
 	struct list_head	sync_timeline_list;
-#endif
 };
 
 static inline struct sync_timeline *fence_parent(struct fence *fence)
@@ -64,7 +62,7 @@
 	struct list_head active_list;
 };
 
-#ifdef CONFIG_DEBUG_FS
+#ifdef CONFIG_SW_SYNC
 
 extern const struct file_operations sw_sync_debugfs_fops;