x86, NMI: NMI selftest depends on the local apic

The selftest doesn't work with out a local apic for now.

Reported-by: Randy Durlap <rdunlap@xenotime.net>
Signed-off-by: Don Zickus <dzickus@redhat.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Link: http://lkml.kernel.org/r/20111207210630.GI1669@redhat.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>

arch/x86/Kconfig.debug

@@ -289,7 +289,7 @@ config DEBUG_STRICT_USER_COPY_CHECKS
 
 config DEBUG_NMI_SELFTEST
 	bool "NMI Selftest"
-	depends on DEBUG_KERNEL
+	depends on DEBUG_KERNEL && X86_LOCAL_APIC
 	---help---
 	  Enabling this option turns on a quick NMI selftest to verify
 	  that the NMI behaves correctly.