dm: include <linker_lists.h> from platdata.h and uclass.h

The header files include/dm/platdata.h and include/dm/uclass.h
use ll_entry_declare(); therefore they depend on
include/linker_lists.h.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Simon Glass <sjg@chromium.org>
diff --git a/include/dm/uclass.h b/include/dm/uclass.h
index 8d09ecf..f6ec6d7 100644
--- a/include/dm/uclass.h
+++ b/include/dm/uclass.h
@@ -11,6 +11,7 @@
 #define _DM_UCLASS_H
 
 #include <dm/uclass-id.h>
+#include <linker_lists.h>
 #include <linux/list.h>
 
 /**