UefiCpuPkg: Add feature definition for PPIN.
UefiCpuPkg: Add feature definition for PPIN.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Eric Dong <fa9eeec52367040ac98013bc4b2913db170588f8@intel.com>
Reviewed-by: Jeff Fan <7d6fed0251a47076d6e691789131f22f07d057b4@intel.com>

MattDevo/edk2,MattDevo/edk2,MattDevo/edk2,MattDevo/edk2,MattDevo/edk2,MattDevo/edk2,MattDevo/edk2,MattDevo/edk2