SecurityPkg: TcgConfigDxe: Move TPM state string update to CallBack function

TPM state string update requires HiiHandle which may not be initialized when calling ExtractConfig.
Move this logic to CallBack function.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Chao Zhang <chao.b.zhang@intel.com>
Reviewed-by: Dandan Bi <dandan.bi@intel.com>

SecurityPkg/Tcg/TcgConfigDxe/TcgConfigImpl.h

@@ -61,6 +61,7 @@ typedef struct {
   EFI_HII_HANDLE                    HiiHandle;
   EFI_HANDLE                        DriverHandle;  
 
+  TCG_CONFIGURATION                 *Configuration;
   EFI_TCG_PROTOCOL                  *TcgProtocol;
 } TCG_CONFIG_PRIVATE_DATA;