UefiCpuPkg/CpuMpPei: Fix BistData ouput error

ProcessorInfo.ProcessorId is UINT64 type even it's valid value is UINT32. Use %x
only output the low 4 bytes and keep the high 4 bytes in stack that will be
output as the second parameter BistData. Typecast ProcessorInfo.ProcessorId to
UINT32 could make BistData output correctly.

Cc: Michael Kinney <michael.d.kinney@intel.com>
Cc: Feng Tian <feng.tian@intel.com>
Cc: Giri P Mudusuru <giri.p.mudusuru@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Feng Tian <feng.tian@Intel.com>

UefiCpuPkg/CpuMpPei/CpuBist.c

@@ -250,7 +250,7 @@ CollectBistDataFromPpi (
         );
     }
     DEBUG ((EFI_D_INFO, "  APICID - 0x%08x, BIST - 0x%08x\n",
-            ProcessorInfo.ProcessorId,
+            (UINT32) ProcessorInfo.ProcessorId,
             BistData
             ));
   }