MdePkg BaseMemoryLibMmx: Convert X64/ZeroMem.asm to NASM

The BaseTools/Scripts/ConvertMasmToNasm.py script was used to convert
X64/ZeroMem.asm to X64/ZeroMem.nasm

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>

MdePkg/Library/BaseMemoryLibMmx/BaseMemoryLibMmx.inf

@@ -96,6 +96,7 @@
   Ia32/CopyMem.asm
 
 [Sources.X64]
+  X64/ZeroMem.nasm
   X64/ZeroMem.asm
   X64/ScanMem64.asm
   X64/ScanMem32.asm
@@ -115,6 +116,7 @@
   X64/SetMem64.S
   X64/SetMem32.S
   X64/SetMem16.S
+  X64/ZeroMem.nasm
   X64/ZeroMem.S
   X64/SetMem.S
   X64/CopyMem.S