nios2: remove asm/psr.h

Remove asm/psr.h, which is not used.
Also clean up asm/sections.h and unaligned.h.

Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Reviewed-by: Marek Vasut <marex@denx.de>

arch/nios2/include/asm/psr.h

-/*
- * (C) Copyright 2004, Psyent Corporation <www.psyent.com>
- * Scott McNutt <smcnutt@psyent.com>
- *
- * SPDX-License-Identifier:	GPL-2.0+
- */
-
-#ifndef __ASM_NIOS2_PSR_H_
-#define __ASM_NIOS2_PSR_H_
-
-
-#endif /* __ASM_NIOS2_PSR_H_ */

arch/nios2/include/asm/sections.h

-/*
- * Copyright (c) 2012 The Chromium OS Authors.
- * SPDX-License-Identifier:	GPL-2.0+
- */
-
-#ifndef __ASM_NIOS2_SECTIONS_H
-#define __ASM_NIOS2_SECTIONS_H
-
 #include <asm-generic/sections.h>
-
-#endif

arch/nios2/include/asm/unaligned.h

-#ifndef _ASM_NIOS2_UNALIGNED_H
-#define _ASM_NIOS2_UNALIGNED_H
-
 #include <asm-generic/unaligned.h>
-
-#endif /* _ASM_NIOS2_UNALIGNED_H */