StandaloneMmPkg/Core: add missing GUID reference

The Standalone core uses gEfiHobMemoryAllocModuleGuid, but failed to
declare this in its INF.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@arm.com>
Reviewed-by: Jiewen Yao <Jiewen.yao@intel.com>
Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
Tested-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
diff --git a/StandaloneMmPkg/Core/StandaloneMmCore.inf b/StandaloneMmPkg/Core/StandaloneMmCore.inf
index 7d590b4..d17ff99 100644
--- a/StandaloneMmPkg/Core/StandaloneMmCore.inf
+++ b/StandaloneMmPkg/Core/StandaloneMmCore.inf
@@ -69,6 +69,7 @@
   gEdkiiMemoryProfileGuid

   gZeroGuid                                     ## SOMETIMES_CONSUMES   ## GUID

   gEfiHobListGuid

+  gEfiHobMemoryAllocModuleGuid

   gMmCoreDataHobGuid

   gMmFvDispatchGuid

   gEfiEventLegacyBootGuid