OvmfPkg: Refactor MeaureFvImage

BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=4243

MeasureFvImage once was implemented in PeilessStartupLib and it does
measurement and logging for Configuration FV (Cfv) image in one go,
using TpmMeasureAndLogData(). But it doesn't work in SEC.

This patch splits MeasureFvImage into 2 functions and implement them in
SecTdxHelperLib.
 - TdxHelperMeasureCfvImage
 - TdxHelperBuildGuidHobForTdxMeasurement

TdxHelperMeasureCfvImage measures the Cfv image and stores the hash value
in WorkArea. TdxHelperBuildGuidHobForTdxMeasurement builds GuidHob for the
measurement based on the hash value in WorkArea.

After these 2 functions are introduced, PeilessStartupLib should also be
updated:
 - Call these 2 functions instead of the MeasureFvImage
 - Delete the duplicated codes in PeilessStartupLib

Cc: Erdem Aktas <erdemaktas@google.com>
Cc: James Bottomley <jejb@linux.ibm.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Michael Roth <michael.roth@amd.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Signed-off-by: Min Xu <min.m.xu@intel.com>

OvmfPkg/Library/PeilessStartupLib/PeilessStartupInternal.h

@@ -58,25 +58,4 @@ EFIAPI
 ConstructSecHobList (
   );
 
-/**
-  Measure FV image.
-
-  @param[in]  FvBase            Base address of FV image.
-  @param[in]  FvLength          Length of FV image.
-  @param[in]  PcrIndex          Index of PCR
-
-  @retval EFI_SUCCESS           Fv image is measured successfully
-                                or it has been already measured.
-  @retval EFI_OUT_OF_RESOURCES  No enough memory to log the new event.
-  @retval EFI_DEVICE_ERROR      The command was unsuccessful.
-
-**/
-EFI_STATUS
-EFIAPI
-MeasureFvImage (
-  IN EFI_PHYSICAL_ADDRESS  FvBase,
-  IN UINT64                FvLength,
-  IN UINT8                 PcrIndex
-  );
-
 #endif