[PATCH] lockdep: enable on x86_64

Enable LOCKDEP_SUPPORT on x86_64.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/x86_64/Kconfig

@@ -24,6 +24,10 @@ config X86
 	bool
 	default y
 
+config LOCKDEP_SUPPORT
+	bool
+	default y
+
 config STACKTRACE_SUPPORT
 	bool
 	default y