UefiPayloadPkg: Add Fixed PCDs and use Macro to define the default value.

UefiPayloadPkg: Add Fixed PCDs and use Macro to define the default value.

Add the three PCDs as fixed at build PCD:
  gEfiMdeModulePkgTokenSpaceGuid.PcdMaxSizeNonPopulateCapsule
  gPcAtChipsetPkgTokenSpaceGuid.PcdRtcIndexRegister
  gPcAtChipsetPkgTokenSpaceGuid.PcdRtcTargetRegister
The default value is defined as Macro, so it can be passed in at build
command.

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