sysctl extern cleanup: lockdep

Extern declarations in sysctl.c should be moved to their own header file,
and then include them in relavant .c files.

Move lockdep extern declarations to linux/lockdep.h

Signed-off-by: Dave Young <hidave.darkstar@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h
index 10206a8..a03977a9 100644
--- a/include/linux/lockdep.h
+++ b/include/linux/lockdep.h
@@ -12,6 +12,10 @@
 struct task_struct;
 struct lockdep_map;
 
+/* for sysctl */
+extern int prove_locking;
+extern int lock_stat;
+
 #ifdef CONFIG_LOCKDEP
 
 #include <linux/linkage.h>