linux/elfcore.h: hide kernel functions

The declarations for elf_core_extra_phdrs() et al got added on the
wrong side of #ifdef __KERNEL__ in linux/elfcore.h so they leak into
the user header copy and we get a warning at build time about it.

Signed-off-by: Roland McGrath <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

include/linux/elfcore.h

···
 }
 #endif
 
-#endif /* __KERNEL__ */
-
 /*
  * These functions parameterize elf_core_dump in fs/binfmt_elf.c to write out
  * extra segments containing the gate DSO contents.  Dumping its
···
 extern int
 elf_core_write_extra_data(struct file *file, size_t *size, unsigned long limit);
 extern size_t elf_core_extra_data_size(void);
+
+#endif /* __KERNEL__ */
 
 #endif /* _LINUX_ELFCORE_H */