dm: core: Rename dm_dump_all()

This is not a good name anymore as it does not dump everything. Rename it
to dm_dump_tree() to avoid confusion.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/include/dm/util.h b/include/dm/util.h
index 4428f04..c52daa8 100644
--- a/include/dm/util.h
+++ b/include/dm/util.h
@@ -25,7 +25,7 @@
 int list_count_items(struct list_head *head);
 
 /* Dump out a tree of all devices */
-void dm_dump_all(void);
+void dm_dump_tree(void);
 
 /* Dump out a list of uclasses and their devices */
 void dm_dump_uclass(void);