IntelFsp2Pkg: BaseFspCommonLib Support for X64

REF:https://bugzilla.tianocore.org/show_bug.cgi?id=3867
Add BaseFspCommonLib Support for X64.

Cc: Chasel Chiu <chasel.chiu@intel.com>
Cc: Nate DeSimone <nathaniel.l.desimone@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
Cc: Ashraf Ali S <ashraf.ali.s@intel.com>
Signed-off-by: Ted Kuo <ted.kuo@intel.com>
Reviewed-by: Chasel Chiu <chasel.chiu@intel.com>

IntelFsp2Pkg/Include/FspGlobalData.h

@@ -42,7 +42,7 @@ typedef struct  {
   UINT32             Signature;
   UINT8              Version;
   UINT8              Reserved1[3];
-  UINT32             CoreStack;
+  UINTN              CoreStack;
   UINT32             StatusCode;
   UINT32             Reserved2[8];
   FSP_PLAT_DATA      PlatformData;

IntelFsp2Pkg/Include/Library/FspCommonLib.h

@@ -38,7 +38,7 @@ GetFspGlobalDataPointer (
 
   @retval ApiParameter FSP API first parameter passed by the bootloader.
 **/
-UINT32
+UINTN
 EFIAPI
 GetFspApiParameter (
   VOID
@@ -49,7 +49,7 @@ GetFspApiParameter (
 
   @retval ApiParameter FSP API second parameter passed by the bootloader.
 **/
-UINT32
+UINTN
 EFIAPI
 GetFspApiParameter2 (
   VOID
@@ -87,7 +87,7 @@ SetFspApiParameter (
 VOID
 EFIAPI
 SetFspApiReturnStatus (
-  IN UINT32  ReturnStatus
+  IN UINTN  ReturnStatus
   );
 
 /**