x86, mce: enable machine checks in 64-bit defconfig

Impact: Low priority fix

The 32-bit defconfig already had it enabled. And it's a pretty
fundamental feature, so better enable it on 64 bits too.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

arch/x86/configs/x86_64_defconfig

@@ -247,7 +247,10 @@ CONFIG_PREEMPT_VOLUNTARY=y
 # CONFIG_PREEMPT is not set
 CONFIG_X86_LOCAL_APIC=y
 CONFIG_X86_IO_APIC=y
-# CONFIG_X86_MCE is not set
+CONFIG_X86_MCE=y
+CONFIG_X86_NEW_MCE=y
+CONFIG_X86_MCE_INTEL=y
+CONFIG_X86_MCE_AMD=y
 # CONFIG_I8K is not set
 CONFIG_MICROCODE=y
 CONFIG_MICROCODE_OLD_INTERFACE=y