UefiPayloadPkg: Fix up UPL Pcd database

Edk2 bootloader will pass the pei pcd database, and UPL also contain a
PCD database.
Dxe PCD driver has the assumption that the two PCD database can be
catenated and the local token number should be successive。
This patch will manually fix up the UPL PCD database to meet that
assumption.

Cc: Maurice Ma <maurice.ma@intel.com>
Cc: Guo Dong <guo.dong@intel.com>
Cc: Benjamin You <benjamin.you@intel.com>
Reviewed-by: Guo Dong <guo.dong@intel.com>
Signed-off-by: Zhiguang Liu <zhiguang.liu@intel.com>

UefiPayloadPkg/UefiPayloadEntry/UefiPayloadEntry.h

@@ -35,6 +35,7 @@
 #include <UniversalPayload/AcpiTable.h>
 #include <UniversalPayload/UniversalPayload.h>
 #include <UniversalPayload/ExtraData.h>
+#include <Guid/PcdDataBaseSignatureGuid.h>
 
 #define LEGACY_8259_MASK_REGISTER_MASTER  0x21
 #define LEGACY_8259_MASK_REGISTER_SLAVE   0xA1
@@ -159,4 +160,48 @@ HandOffToDxeCore (
   IN EFI_PEI_HOB_POINTERS   HobList
   );
 
+EFI_STATUS
+FixUpPcdDatabase (
+  IN  EFI_FIRMWARE_VOLUME_HEADER *DxeFv
+  );
+
+/**
+  This function searchs a given section type within a valid FFS file.
+
+  @param  FileHeader            A pointer to the file header that contains the set of sections to
+                                be searched.
+  @param  SearchType            The value of the section type to search.
+  @param  SectionData           A pointer to the discovered section, if successful.
+
+  @retval EFI_SUCCESS           The section was found.
+  @retval EFI_NOT_FOUND         The section was not found.
+
+**/
+EFI_STATUS
+FileFindSection (
+  IN EFI_FFS_FILE_HEADER        *FileHeader,
+  IN EFI_SECTION_TYPE           SectionType,
+  OUT VOID                      **SectionData
+  );
+
+/**
+  This function searchs a given file type with a given Guid within a valid FV.
+  If input Guid is NULL, will locate the first section having the given file type
+
+  @param FvHeader        A pointer to firmware volume header that contains the set of files
+                         to be searched.
+  @param FileType        File type to be searched.
+  @param Guid            Will ignore if it is NULL.
+  @param FileHeader      A pointer to the discovered file, if successful.
+
+  @retval EFI_SUCCESS    Successfully found FileType
+  @retval EFI_NOT_FOUND  File type can't be found.
+**/
+EFI_STATUS
+FvFindFileByTypeGuid (
+  IN  EFI_FIRMWARE_VOLUME_HEADER  *FvHeader,
+  IN  EFI_FV_FILETYPE             FileType,
+  IN  EFI_GUID                    *Guid           OPTIONAL,
+  OUT EFI_FFS_FILE_HEADER         **FileHeader
+  );
 #endif