MdeModulePkg/DxeIpl: Enable paging for Stack Guard

Stack guard feature makes use of paging mechanism to monitor if there's a
stack overflow occurred during boot.

This patch will check setting of PCD PcdCpuStackGuard. If it's TRUE, DxeIpl
will setup page table and set the page at which the stack base locates to be
NOT PRESENT. If stack is used up and memory access cross into the last page
of it, #PF exception will be triggered.

Cc: Star Zeng <star.zeng@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Suggested-by: Ayellet Wolman <ayellet.wolman@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Jian J Wang <jian.j.wang@intel.com>
Reviewed-by: Jeff Fan <vanjeff_919@hotmail.com>
Reviewed-by: Jiewen.yao@intel.com

MdeModulePkg/Core/DxeIplPeim/Ia32/DxeLoadFunc.c

@@ -235,6 +235,10 @@ ToBuildPageTable (
     return TRUE;
   }
 
+  if (PcdGetBool (PcdCpuStackGuard)) {
+    return TRUE;
+  }
+
   if (PcdGetBool (PcdSetNxForStack) && IsExecuteDisableBitAvailable ()) {
     return TRUE;
   }