[PATCH] elf.h: forward declare struct file

In file included from include/asm/patch.h:14,
		 from arch/ia64/kernel/patch.c:10:
  include/linux/elf.h:375: warning: "struct file" declared inside parameter list
  include/linux/elf.h:375: warning: its scope is only this definition or declaration, which is probably not what you want

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

include/linux/elf.h

@@ -6,6 +6,8 @@
 #include <linux/elf-em.h>
 #include <asm/elf.h>
 
+struct file;
+
 #ifndef elf_read_implies_exec
   /* Executables for which elf_read_implies_exec() returns TRUE will
      have the READ_IMPLIES_EXEC personality flag set automatically.