ARM: 8287/1: add bitrev.h file to support rbit instruction

	select HANDLE_DOMAIN_IRQ

	select HARDIRQS_SW_RESEND

	select HAVE_ARCH_AUDITSYSCALL if (AEABI && !OABI_COMPAT)

	select HAVE_ARCH_BITREVERSE if (CPU_32v7M || CPU_32v7) && !CPU_32v6

	select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL

	select HAVE_ARCH_KGDB

	select HAVE_ARCH_SECCOMP_FILTER if (AEABI && !OABI_COMPAT)

#ifndef __ASM_BITREV_H

#define __ASM_BITREV_H

static __always_inline __attribute_const__ u32 __arch_bitrev32(u32 x)

{

	__asm__ ("rbit %0, %1" : "=r" (x) : "r" (x));

	return x;

}

static __always_inline __attribute_const__ u16 __arch_bitrev16(u16 x)

{

	return __arch_bitrev32((u32)x) >> 16;

}

static __always_inline __attribute_const__ u8 __arch_bitrev8(u8 x)

{

	return __arch_bitrev32((u32)x) >> 24;

}

#endif