[PATCH] i386: Remove extern declaration from mm/discontig.c, put in header.

Extern declarations belong in headers.  Times, they are a'changin.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andi Kleen <ak@suse.de>

===================================================================
diff --git a/include/asm-i386/setup.h b/include/asm-i386/setup.h
index 7631627..0e8077c 100644
--- a/include/asm-i386/setup.h
+++ b/include/asm-i386/setup.h
@@ -77,6 +77,8 @@
 void __init add_memory_region(unsigned long long start,
 			      unsigned long long size, int type);
 
+extern unsigned long init_pg_tables_end;
+
 #endif /* __ASSEMBLY__ */
 
 #endif  /*  __KERNEL__  */