current in FDF spec 3.6 [FV] section it use "FV_EXT_ENTRY_TYPE" as Keyword for <ExtendedFvEntry>, while in the code it use "FV_EXT_ENTRY". To keep compatibility, this patch support both keyword in the code first. Cc: Liming Gao <liming.gao@intel.com> Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Yonghong Zhu <yonghong.zhu@intel.com> Reviewed-by: Liming Gao <liming.gao@intel.com>