MdeModulePkg/EbcDxe: prepare support for EBC Debugger

* This patch introduces EbcDebuggerHook.c/h and inserts the required
  EBCDebugger references into the existing EBC source files.
* With all the hooks defined to their empty version in EbcDebuggerHook.c
  the existing EBC VM behaviour is left unaffected.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Pete Batard <pete@akeo.ie>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>

MdeModulePkg/Universal/EbcDxe/EbcInt.c

@@ -16,6 +16,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 
 #include "EbcInt.h"
 #include "EbcExecute.h"
+#include "EbcDebuggerHook.h"
 
 //
 // We'll keep track of all thunks we create in a linked list. Each
@@ -497,6 +498,8 @@ InitializeEbcDriver (
     InitEbcVmTestProtocol (&ImageHandle);
   DEBUG_CODE_END ();
 
+  EbcDebuggerHookInit (ImageHandle, EbcDebugProtocol);
+
   return EFI_SUCCESS;
 
 ErrorExit:
@@ -1094,6 +1097,9 @@ EbcUnloadImage (
   // Now free up the image list element
   //
   FreePool (ImageList);
+
+  EbcDebuggerHookEbcUnloadImage (ImageHandle);
+
   return EFI_SUCCESS;
 }