Add InvokePeiCore function to invoke the PeiCore in new stack.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@3844 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Core/Pei/Ipf/Stack.c

@@ -16,17 +16,6 @@
 
 #include <PeiMain.h>
 
-VOID
-EFIAPI
-InternalSwitchStack (
-  IN      SWITCH_STACK_ENTRY_POINT  EntryPoint,
-  IN      VOID                      *Context1,   OPTIONAL
-  IN      VOID                      *Context2,   OPTIONAL
-  IN      VOID                      *Context3,   OPTIONAL
-  IN      VOID                      *NewStack,
-  IN      VA_LIST                   Marker
-  );
-
 /**
   Transfers control to a function starting with a new stack.
 
@@ -55,18 +44,15 @@ PeiSwitchStacks (
   IN      SWITCH_STACK_ENTRY_POINT  EntryPoint,
   IN      VOID                      *Context1,  OPTIONAL
   IN      VOID                      *Context2,  OPTIONAL
-  IN      VOID                      *Context3,  OPTIONAL
   IN      VOID                      *NewStack,
   IN      VOID                      *NewBsp
   )
 {
-  InternalSwitchStack(
+  SwitchStack (
     EntryPoint,
     Context1,
     Context2,
-    Context3,
     NewStack,
     NewBsp
     );
-
 }