DynamicHiiPcd may be used by PEIM or DXE driver.
All used DynamicHiiPcd value should be collected and placed into
the default setting PCD PcdNvStoreDefaultValueBuffer.
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Bob Feng <bob.c.feng@intel.com>
Cc: Liming Gao <liming.gao@intel.com>