Start application processor

xtoskrnl/includes/i686/ari.h

@@ -113,6 +113,10 @@ XTCDECL
 VOID
 ArSetInterruptFlag(VOID);
 
+XTCDECL
+VOID
+ArStartApplicationProcessor();
+
 XTCDECL
 VOID
 ArStoreGlobalDescriptorTable(OUT PVOID Destination);