--- zzzz-none-000/linux-4.1.52/arch/arm/include/asm/prom.h	2018-05-28 02:26:45.000000000 +0000
+++ bcm63-7530ax-731/linux-4.1.52/arch/arm/include/asm/prom.h	2022-03-02 11:37:12.000000000 +0000
@@ -1,29 +1,4 @@
-/*
- *  arch/arm/include/asm/prom.h
- *
- *  Copyright (C) 2009 Canonical Ltd. <jeremy.kerr@canonical.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- */
 #ifndef __ASMARM_PROM_H
 #define __ASMARM_PROM_H
-
-#ifdef CONFIG_OF
-
-extern const struct machine_desc *setup_machine_fdt(unsigned int dt_phys);
-extern void __init arm_dt_init_cpu_maps(void);
-
-#else /* CONFIG_OF */
-
-static inline const struct machine_desc *setup_machine_fdt(unsigned int dt_phys)
-{
-	return NULL;
-}
-
-static inline void arm_dt_init_cpu_maps(void) { }
-
-#endif /* CONFIG_OF */
+#include <linux/env.h>
 #endif /* ASMARM_PROM_H */