UefiCpuPkg/PiSmmCpuDxeSmm: Combine INIT-SIPI-SIPI.
UefiCpuPkg/PiSmmCpuDxeSmm: Combine INIT-SIPI-SIPI.

In S3 resume path, current implementation do 2 separate INIT-SIPI-SIPI,
this is not necessary. This change combine these 2 INIT-SIPI-SIPI to 1
and add CpuPause between them.

Cc: Jiewen Yao <364a90bfebd1f362ebb7b48e4bf8ec010adef203@intel.com>
Cc: Ruiyu Ni <9fa3a6894a36bca79e6a72ad65af5a5702efecd1@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Eric Dong <fa9eeec52367040ac98013bc4b2913db170588f8@intel.com>
Reviewed-by: Ruiyu Ni <9fa3a6894a36bca79e6a72ad65af5a5702efecd1@intel.com>

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