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/board/cirrus/edb93xx/edb93xx.c b/board/cirrus/edb93xx/edb93xx.c
index 0966e37..dfebb7c 100644
--- a/board/cirrus/edb93xx/edb93xx.c
+++ b/board/cirrus/edb93xx/edb93xx.c
@@ -16,6 +16,7 @@
 #include <config.h>
 #include <common.h>
 #include <cpu_func.h>
+#include <irq_func.h>
 #include <netdev.h>
 #include <status_led.h>
 #include <asm/io.h>