Properly relocate PE/COFF image

xtldr/modules/pecoff/includes/pecoff.h

@@ -23,6 +23,9 @@ PeLoadImage(IN PEFI_FILE_HANDLE FileHandle,
             IN PVOID VirtualAddress,
             OUT PPECOFF_IMAGE_CONTEXT *Image);
 
+EFI_STATUS
+PepRelocateImage(IN PPECOFF_IMAGE_CONTEXT Image);
+
 EFI_STATUS
 PepValidateImageHeaders(IN PPECOFF_IMAGE_DOS_HEADER DosHeader,
                         IN PPECOFF_IMAGE_PE_HEADER PeHeader,