Add InitFlag member in DEBUG_AGENT_PHASE2_CONTEXT to pass into InitializeDebugAgentPhase2().

Signed-off-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14929 6f19259b-4bc3-4df7-8a09-765794883524

SourceLevelDebugPkg/Library/DebugAgent/SecPeiDebugAgent/SecPeiDebugAgentLib.h

@@ -22,6 +22,7 @@
 #include "DebugAgent.h"
 
 typedef struct {
+  UINT32                  InitFlag;
   VOID                    *Context;
   DEBUG_AGENT_CONTINUE    Function;
 } DEBUG_AGENT_PHASE2_CONTEXT;