x86: TSC deadline definitions

This pre-defination is preparing for KVM tsc deadline timer emulation, but
theirself are not kvm specific.

Signed-off-by: Liu, Jinsong <jinsong.liu@intel.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

diff --cc arch/x86/include/asm/apicdef.h
Simple merge

diff --cc arch/x86/include/asm/cpufeature.h
Simple merge

diff --cc arch/x86/include/asm/msr-index.h
Simple merge