common: Move ARM cache operations out of common.h

These functions are CPU-related and do not use driver model. Move them to
cpu_func.h

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/drivers/dma/apbh_dma.c b/drivers/dma/apbh_dma.c
index ac589fe..1513312 100644
--- a/drivers/dma/apbh_dma.c
+++ b/drivers/dma/apbh_dma.c
@@ -9,6 +9,7 @@
  * Copyright (C) 2010 Freescale Semiconductor, Inc. All Rights Reserved.
  */
 
+#include <cpu_func.h>
 #include <linux/list.h>
 
 #include <common.h>