Implement MmpGetPdeAddress() and MmpGetPteAddress() routines for i686 architecture as well as MmpMemoryExtensionEnabled() for checking PAE/LA57 support

xtoskrnl/includes/mmi.h

@@ -43,6 +43,10 @@ XTAPI
 VOID
 MmFreeProcessorStructures(IN PVOID StructuresData);
 
+XTAPI
+VOID
+MmInitializeHardware(VOID);
+
 XTAPI
 VOID
 MmInitializeMemoryManager(VOID);