UefiPayloadPkg: Update maximum logic processor to 256

UefiPayloadPkg: Update maximum logic processor to 256

Signed-off-by: Cheng-Chieh Huang <chengchieh@google.com>
Reviewed-by: Guo Dong <guo.dong@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
Cc: Cheng-Chieh Huang <chengchieh@google.com>
Cc: Daniel Schaefer <daniel.schaefer@hpe.com>
Cc: Trammell Hudson <hudson@trmm.net>
Cc: Maurice Ma <maurice.ma@intel.com>
Cc: Guo Dong <guo.dong@intel.com>
Cc: Benjamin You <benjamin.you@intel.com>
Cc: Ray Ni <ray.ni@intel.com>