UefiPayloadPkg: Fix up UPL Pcd database

UefiPayloadPkg: Fix up UPL Pcd database

Edk2 bootloader will pass the pei pcd database, and UPL also contain a
PCD database.
Dxe PCD driver has the assumption that the two PCD database can be
catenated and the local token number should be successive。
This patch will manually fix up the UPL PCD database to meet that
assumption.

Cc: Maurice Ma <maurice.ma@intel.com>
Cc: Guo Dong <guo.dong@intel.com>
Cc: Benjamin You <benjamin.you@intel.com>
Reviewed-by: Guo Dong <guo.dong@intel.com>
Signed-off-by: Zhiguang Liu <zhiguang.liu@intel.com>