x86, sched: enable wchan config menu item on 64-bit

Enable the wchan config menu item for now on x86-64 arch?  This will
at least allow people to enable/disable frame pointers on scheduler
functions.

Signed-off-by: Ken Chen <kenchen@google.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 6f20718..488a4ec 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -367,7 +367,7 @@
 config SCHED_NO_NO_OMIT_FRAME_POINTER
 	def_bool y
 	prompt "Single-depth WCHAN output"
-	depends on X86_32
+	depends on X86
 	help
 	  Calculate simpler /proc/<PID>/wchan values. If this option
 	  is disabled then wchan values will recurse back to the