[PATCH] elf coredump: include <linux/elfcore.h> to fix warnings

[Ben Dooks <ben.dooks@codethink.co.uk>]

The kernel/elfcore.c defines functions declared in the
header <linux/elfcore.h> but does not current include
it. The inclusion fixes the following sparse warnings:

kernel/elfcore.c:6:17: warning: symbol 'elf_core_extra_phdrs' was not declared. Should it be static?
kernel/elfcore.c:11:12: warning: symbol 'elf_core_write_extra_phdrs' was not declared. Should it be static?
kernel/elfcore.c:16:12: warning: symbol 'elf_core_write_extra_data' was not declared. Should it be static?
kernel/elfcore.c:21:15: warning: symbol 'elf_core_extra_data_size' was not declared. Should it be static?

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
---
Cc: linux-kernel@vger.kernel.org
---
 kernel/elfcore.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/elfcore.c b/kernel/elfcore.c
index e556751..a2b29b9 100644
--- a/kernel/elfcore.c
+++ b/kernel/elfcore.c
@@ -2,6 +2,7 @@
 #include <linux/fs.h>
 #include <linux/mm.h>
 #include <linux/binfmts.h>
+#include <linux/elfcore.h>
 
 Elf_Half __weak elf_core_extra_phdrs(void)
 {
-- 
2.8.1