i386: really stop MCEs during code patching

It's CONFIG_X86_MCE, not CONFIG_MCE.

Signed-off-by: Adrian Bunk <[e-mail]>
Signed-off-by: Andi Kleen <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

arch/i386/kernel/alternative.c

···
 	   that might execute the to be patched code.
 	   Other CPUs are not running. */
 	stop_nmi();
-#ifdef CONFIG_MCE
+#ifdef CONFIG_X86_MCE
 	stop_mce();
 #endif
 
···
 	local_irq_restore(flags);
 
 	restart_nmi();
-#ifdef CONFIG_MCE
+#ifdef CONFIG_X86_MCE
 	restart_mce();
 #endif
 }