common: Move clock functions into a new file
These three clock functions don't use driver model and should be migrated.
In the meantime, create a new file to hold them.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/board/freescale/ls1021atsn/ls1021atsn.c b/board/freescale/ls1021atsn/ls1021atsn.c
index 532ca89..3876910 100644
--- a/board/freescale/ls1021atsn/ls1021atsn.c
+++ b/board/freescale/ls1021atsn/ls1021atsn.c
@@ -2,6 +2,7 @@
/* Copyright 2016-2019 NXP Semiconductors
*/
#include <common.h>
+#include <clock_legacy.h>
#include <fdt_support.h>
#include <init.h>
#include <asm/arch-ls102xa/ls102xa_soc.h>