SecurityPkg OpalPasswordSmm: Consume SmmIoLib.

Update code to consume SmmIoLib to check Mmio validation.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>

SecurityPkg/Tcg/Opal/OpalPasswordSmm/OpalPasswordSmm.h

@@ -45,6 +45,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #include <Library/S3BootScriptLib.h>
 #include <Library/DevicePathLib.h>
 #include <Library/DxeServicesTableLib.h>
+#include <Library/SmmIoLib.h>
 
 #include <IndustryStandard/Pci22.h>
 
@@ -70,8 +71,6 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 
 extern VOID                              *mBuffer;
 
-extern EFI_GCD_MEMORY_SPACE_DESCRIPTOR   *mGcdMemSpace;
-extern UINTN                             mNumberOfDescriptors;
 #pragma pack(1)
 
 typedef struct {