tools headers: Grab copy of linux/const.h, needed by linux/bits.h

#ifndef _LINUX_CONST_H

#define _LINUX_CONST_H

#include <uapi/linux/const.h>

#define UL(x)		(_UL(x))

#define ULL(x)		(_ULL(x))

#endif /* _LINUX_CONST_H */

/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */

/* const.h: Macros for dealing with constants.  */

#ifndef _UAPI_LINUX_CONST_H

#define _UAPI_LINUX_CONST_H

/* Some constant macros are used in both assembler and

 * C code.  Therefore we cannot annotate them always with

 * 'UL' and other type specifiers unilaterally.  We

 * use the following macros to deal with this.

 *

 * Similarly, _AT() will cast an expression with a type in C, but

 * leave it unchanged in asm.

 */

#ifdef __ASSEMBLY__

#define _AC(X,Y)	X

#define _AT(T,X)	X

#else

#define __AC(X,Y)	(X##Y)

#define _AC(X,Y)	__AC(X,Y)

#define _AT(T,X)	((T)(X))

#endif

#define _UL(x)		(_AC(x, UL))

#define _ULL(x)		(_AC(x, ULL))

#define _BITUL(x)	(_UL(1) << (x))

#define _BITULL(x)	(_ULL(1) << (x))

#endif /* _UAPI_LINUX_CONST_H */

# SPDX-License-Identifier: GPL-2.0

HEADERS='

include/uapi/linux/const.h

include/uapi/drm/drm.h

include/uapi/drm/i915_drm.h

include/uapi/linux/fadvise.h

include/uapi/linux/vhost.h

include/uapi/sound/asound.h

include/linux/bits.h

include/linux/const.h

include/linux/hash.h

include/uapi/linux/hw_breakpoint.h

arch/x86/include/asm/disabled-features.h