BaseTools/GenFds: permit stripped MM_CORE_STANDALONE binaries

The standalone MM core is executed in place, and resides in a
separate execution context which may be space constrained.
Since code and data may be mapped with different attributes for
security reasons, the PE/COFF binary could have a section
alignment of 4 KB.

This means that any relocation data is not only useless, but it
will also take up 4 KB of valuable space.

So add support for the RELOCS_STRIPPED attribute on FFS files of
this type, so that we can get rid of the .reloc section altogether.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Jaben Carsey <jaben.carsey@intel.com>
Reviewed-by: Bob Feng <bob.c.feng@intel.com>

BaseTools/Source/Python/GenFds/FdfParser.py

@@ -2589,7 +2589,7 @@ class FdfParser:
     #
     @staticmethod
     def _FileCouldHaveRelocFlag (FileType):
-        if FileType in {SUP_MODULE_SEC, SUP_MODULE_PEI_CORE, SUP_MODULE_PEIM, 'PEI_DXE_COMBO'}:
+        if FileType in {SUP_MODULE_SEC, SUP_MODULE_PEI_CORE, SUP_MODULE_PEIM, SUP_MODULE_MM_CORE_STANDALONE, 'PEI_DXE_COMBO'}:
             return True
         else:
             return False