x86/mce: Update MCE severity condition check
x86/mce: Update MCE severity condition check

Update some SRAR severity conditions check to make it clearer,
according to latest Intel SDM Vol 3(June 2013), table 15-20.

Signed-off-by: Chen Gong <1b6cd78b57df009d087b682fa5d09a04e6a050ac@linux.intel.com>
Acked-by: Naveen N. Rao <ab6d6a855b3296300e8aab8024dd0ef8fdc6eb45@linux.vnet.ibm.com>
Signed-off-by: Tony Luck <e7984595ec0368ff920a7b3521dc7093683f6f26@intel.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs