REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2786 Since the type of PcdStatusCodeUseSerial and PcdStatusCodeUseMemory in MdeModulePkg.dec are changed, so change them from PcdsFeatureFlag to PcdsFixedAtBuild in dsc files. Cc: Maurice Ma <maurice.ma@intel.com> Reviewed-by: Guo Dong <guo.dong@intel.com> Cc: Benjamin You <benjamin.you@intel.com> Signed-off-by: Ming Tan <ming.tan@intel.com>