include/linux/unaligned/packed_struct.h: use __packed

#include <linux/kernel.h>

struct __una_u16 { u16 x; } __attribute__((packed));

struct __una_u32 { u32 x; } __attribute__((packed));

struct __una_u64 { u64 x; } __attribute__((packed));

struct __una_u16 { u16 x; } __packed;

struct __una_u32 { u32 x; } __packed;

struct __una_u64 { u64 x; } __packed;

static inline u16 __get_unaligned_cpu16(const void *p)

{