UefiCpuPkg/PiSmmCpuDxeSmm: Use public MSR_IA32_MISC_ENABLE definition
    
    Use the MSR MSR_IA32_MISC_ENABLE definition defined in UefiCpuPkg/Include and
    remove the local definition.
    
    Cc: Michael Kinney <michael.d.kinney@intel.com>
    Cc: Jiewen Yao <jiewen.yao@intel.com>
    Cc: Feng Tian <feng.tian@intel.com>
    Contributed-under: TianoCore Contribution Agreement 1.0
    Signed-off-by: Jeff Fan <jeff.fan@intel.com>
    Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
    Reviewed-by: Michael Kinney <michael.d.kinney@intel.com>
    Regression-tested-by: Laszlo Ersek <lersek@redhat.com>