MdeModulePkg/Variable: Consume Variable Flash Info

REF:https://bugzilla.tianocore.org/show_bug.cgi?id=3479

Updates VariableRuntimeDxe, VariableSmm, and VariableStandaloneMm
to acquire variable flash information from the Variable Flash
Information library.

Note: This introduces a dependency on VariableFlashInfoLib in these
modules. Therefore, a platform building the variable modules must
specify an instance of VariableFlashInfoLib in their platform build.

Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Hao A Wu <hao.a.wu@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>
Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>

MdeModulePkg/Universal/Variable/Pei/VariablePei.inf

@@ -39,6 +39,8 @@
   DebugLib
   PeiServicesTablePointerLib
   PeiServicesLib
+  SafeIntLib
+  VariableFlashInfoLib
 
 [Guids]
   ## CONSUMES             ## GUID # Variable store header
@@ -59,9 +61,6 @@
   gEfiPeiReadOnlyVariable2PpiGuid   ## PRODUCES
 
 [Pcd]
-  gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableBase      ## SOMETIMES_CONSUMES
-  gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableBase64    ## CONSUMES
-  gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableSize      ## CONSUMES
   gEfiMdeModulePkgTokenSpaceGuid.PcdEmuVariableNvModeEnable         ## SOMETIMES_CONSUMES
 
 [Depex]