MdeModulePkg PcdDxe: ASSERT PcdSetNvStoreDefaultId set

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1245

In current implementation and according to the description in
MdeModulePkg.dec, PcdSetNvStoreDefaultId should be set in PEI
phase to take effect.

This patch ASSERTs PcdSetNvStoreDefaultId set in PcdDxe to alert
the invalid operation.

Cc: Liming Gao <liming.gao@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
Reviewed-by: Jian J Wang <jian.j.wang@intel.com>

MdeModulePkg/Universal/PCD/Dxe/Pcd.c

@@ -890,6 +890,11 @@ DxePcdSet16Ex (
   IN UINT16            Value
   )
 {
+  //
+  // PcdSetNvStoreDefaultId should be set in PEI phase to take effect.
+  //
+  ASSERT (!(CompareGuid (Guid, &gEfiMdeModulePkgTokenSpaceGuid) &&
+            (ExTokenNumber == PcdToken(PcdSetNvStoreDefaultId))));
   return  ExSetValueWorker (ExTokenNumber, Guid, &Value, sizeof (Value));
 }
 

MdeModulePkg/Universal/PCD/Dxe/Pcd.inf

@@ -331,6 +331,7 @@
 [Guids]
   gPcdDataBaseHobGuid                           ## SOMETIMES_CONSUMES  ## HOB
   gPcdDataBaseSignatureGuid                     ## CONSUMES  ## GUID  # PCD database signature GUID.
+  gEfiMdeModulePkgTokenSpaceGuid                ## SOMETIMES_CONSUMES  ## GUID
 
 [Protocols]
   gPcdProtocolGuid                              ## PRODUCES
@@ -343,6 +344,7 @@
 
 [Pcd]
   gEfiMdeModulePkgTokenSpaceGuid.PcdVpdBaseAddress      ## SOMETIMES_CONSUMES
+  gEfiMdeModulePkgTokenSpaceGuid.PcdSetNvStoreDefaultId ## SOMETIMES_CONSUMES
 
 [Depex]
   TRUE