common: Move older CPU functions to their own header

These should be moved to driver model, but in the meantime, move them
out of the common header to help reduce its size.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>

include/cpu_func.h

@@ -0,0 +1,23 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * (C) Copyright 2000-2009
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ * Copyright 2019 Google LLC
+ */
+
+#ifndef __CPU_LEGACY_H
+#define __CPU_LEGACY_H
+
+#include <linux/types.h>
+
+/*
+ * Multicore arch functions
+ *
+ * These should be moved to use the CPU uclass.
+ */
+int cpu_status(u32 nr);
+int cpu_reset(u32 nr);
+int cpu_disable(u32 nr);
+int cpu_release(u32 nr, int argc, char * const argv[]);
+
+#endif