edac/Kconfig: edac_mce can't be module

Since mcelog is bool, edac_mce glue should also be bool, or otherwise
will not work.
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

drivers/edac/Kconfig

@@ -70,7 +70,7 @@ config EDAC_MM_EDAC
 	  replaced.  If unsure, select 'Y'.
 
 config EDAC_MCE
-	tristate
+	bool
 
 config EDAC_AMD64
 	tristate "AMD64 (Opteron, Athlon64) K8, F10h, F11h"