UefiCpuPkg: Simplify the implementation when separate exception stacks

The API of InitializeSeparateExceptionStacks is just changed before, and
makes the struct CPU_EXCEPTION_INIT_DATA an internal definition.
Furthermore, we can even remove the struct to make core simpler.

Cc: Eric Dong <eric.dong@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Signed-off-by: Zhiguang Liu <zhiguang.liu@intel.com>

UefiCpuPkg/Library/CpuExceptionHandlerLib/Xcode5SecPeiCpuExceptionHandlerLib.inf

@@ -2,7 +2,7 @@
 #  CPU Exception Handler library instance for SEC/PEI modules.
 #
 #  Copyright (C) 2020, Advanced Micro Devices, Inc. All rights reserved.<BR>
-#  Copyright (c) 2012 - 2018, Intel Corporation. All rights reserved.<BR>
+#  Copyright (c) 2012 - 2022, Intel Corporation. All rights reserved.<BR>
 #  SPDX-License-Identifier: BSD-2-Clause-Patent
 #
 #  This is the XCODE5 variant of the SEC/PEI CpuExceptionHandlerLib. This
@@ -55,6 +55,11 @@
   PeCoffGetEntryPointLib
   VmgExitLib
 
+[Pcd]
+  gEfiMdeModulePkgTokenSpaceGuid.PcdCpuStackGuard
+  gUefiCpuPkgTokenSpaceGuid.PcdCpuStackSwitchExceptionList
+  gUefiCpuPkgTokenSpaceGuid.PcdCpuKnownGoodStackSize
+
 [FeaturePcd]
   gUefiCpuPkgTokenSpaceGuid.PcdCpuSmmStackGuard                    ## CONSUMES