UefiPayloadPkg: Add a SMM dispatch module

PCH SMM module would install SMM SW dispatch2 protocol.
And it supports to register SMI handlers based on SMI APM
interrupt from the bootloader information gSmmRegisterInfoGuid.
It is possible to extend bootloader HOB to pass other information
to support more SMI sources.
If this module is not required by bootloader for some reason, the
bootloader could skip this HOB or build a HOB without EOS info.

Signed-off-by: Guo Dong <guo.dong@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Maurice Ma <maurice.ma@intel.com>
Cc: Benjamin You <benjamin.you@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
Reviewed-by: Benjamin You <benjamin.you@intel.com>

UefiPayloadPkg/PchSmiDispatchSmm/PchSmiDispatchSmm.inf

@@ -0,0 +1,51 @@
+## @file
+#  PCH SMM SMI Software dispatch module.
+#
+#  Copyright (c) 2021, Intel Corporation. All rights reserved.<BR>
+#
+#  SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+[Defines]
+  INF_VERSION                    = 0x00010005
+  BASE_NAME                      = PchSmiDispatchSmm
+  FILE_GUID                      = 60F343E3-2AE2-4AA7-B01E-BF9BD5C04A3B
+  MODULE_TYPE                    = DXE_SMM_DRIVER
+  VERSION_STRING                 = 1.0
+  PI_SPECIFICATION_VERSION       = 0x0001000A
+  ENTRY_POINT                    = PchSmiDispatchEntryPoint
+
+#
+# The following information is for reference only and not required by the build tools.
+#
+#  VALID_ARCHITECTURES           = IA32 X64
+#
+
+[Sources]
+  PchSmiDispatchSmm.c
+  PchSmiDispatchSmm.h
+
+[Packages]
+  MdePkg/MdePkg.dec
+  UefiPayloadPkg/UefiPayloadPkg.dec
+
+[LibraryClasses]
+  UefiDriverEntryPoint
+  MemoryAllocationLib
+  DebugLib
+  UefiBootServicesTableLib
+  SmmServicesTableLib
+  BaseLib
+  IoLib
+  HobLib
+
+[Protocols]
+  gEfiSmmCpuProtocolGuid                   # PROTOCOL ALWAYS_CONSUMED
+  gEfiSmmSwDispatch2ProtocolGuid           # PROTOCOL ALWAYS_PRODUCED
+
+[Guids]
+  gSmmRegisterInfoGuid
+
+[Depex]
+  gEfiSmmCpuProtocolGuid