.nasm file has been added for X86 arch. .S assembly code is not required any more. https://bugzilla.tianocore.org/show_bug.cgi?id=1594 Cc: Hao Wu <hao.a.wu@intel.com> Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Shenglei Zhang <shenglei.zhang@intel.com> Reviewed-by: Liming Gao <liming.gao@intel.com>