switch elf_coredump_extra_notes_write() to dump_emit()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/include/linux/elf.h b/include/linux/elf.h
index 40a3c0e0..67a5fa7 100644
--- a/include/linux/elf.h
+++ b/include/linux/elf.h
@@ -39,13 +39,13 @@
 
 /* Optional callbacks to write extra ELF notes. */
 struct file;
+struct coredump_params;
 
 #ifndef ARCH_HAVE_EXTRA_ELF_NOTES
 static inline int elf_coredump_extra_notes_size(void) { return 0; }
-static inline int elf_coredump_extra_notes_write(struct file *file,
-			loff_t *foffset) { return 0; }
+static inline int elf_coredump_extra_notes_write(struct coredump_params *cprm) { return 0; }
 #else
 extern int elf_coredump_extra_notes_size(void);
-extern int elf_coredump_extra_notes_write(struct file *file, loff_t *foffset);
+extern int elf_coredump_extra_notes_write(struct coredump_params *cprm);
 #endif
 #endif /* _LINUX_ELF_H */