netfilter: xtables: make XT_ALIGN() usable in exported headers by exporting __ALIGN_KERNEL()

/*

 * 'kernel.h' contains some often-used function prototypes etc

 */

#define __ALIGN_KERNEL(x, a)		__ALIGN_KERNEL_MASK(x, (typeof(x))(a) - 1)

#define __ALIGN_KERNEL_MASK(x, mask)	(((x) + (mask)) & ~(mask))

#ifdef __KERNEL__

#define STACK_MAGIC	0xdeadbeef

#define ALIGN(x,a)		__ALIGN_MASK(x,(typeof(x))(a)-1)

#define __ALIGN_MASK(x,mask)	(((x)+(mask))&~(mask))

#define ALIGN(x, a)		__ALIGN_KERNEL((x), (a))

#define PTR_ALIGN(p, a)		((typeof(p))ALIGN((unsigned long)(p), (a)))

#define IS_ALIGNED(x, a)		(((x) & ((typeof(x))(a) - 1)) == 0)

#ifndef _X_TABLES_H

#define _X_TABLES_H

#include <linux/kernel.h>

#include <linux/types.h>

#define XT_FUNCTION_MAXNAMELEN 30

	__u64 u64;

};

#define XT_ALIGN(s) ALIGN((s), __alignof__(struct _xt_align))

#define XT_ALIGN(s) __ALIGN_KERNEL((s), __alignof__(struct _xt_align))

/* Standard return verdict, or do jump. */

#define XT_STANDARD_TARGET ""

	compat_u64 u64;

};

#define COMPAT_XT_ALIGN(s) ALIGN((s), __alignof__(struct _compat_xt_align))

#define COMPAT_XT_ALIGN(s) __ALIGN_KERNEL((s), __alignof__(struct _compat_xt_align))

extern void xt_compat_lock(u_int8_t af);

extern void xt_compat_unlock(u_int8_t af);