[Description]:

Sync 1 trackers.
 EDK 1098   
[Impaction]:
Should be minimal impact as there is no code parsing the HII vendor specific device.
[Reference Info]:
EDK 1098 Seems there are two same device path protocols in NT 

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5476 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Include/MdeModuleHii.h

@@ -29,10 +29,13 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 //
 // Tiano Implementation specific Device Path definition.
 //
+#pragma pack(1)
 typedef struct {
   VENDOR_DEVICE_PATH             VendorDevicePath;
-  UINT32                         MonotonicCount;
+  UINT32                         Reserved;
+  UINT64                         UniqueId;
 } HII_VENDOR_DEVICE_PATH_NODE;
+#pragma pack()
 
 typedef struct {
   HII_VENDOR_DEVICE_PATH_NODE    Node;