MdePkg BaseLib: Convert X64/ReadIdtr.asm to NASM

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

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

MdePkg/Library/BaseLib/BaseLib.inf

@@ -515,6 +515,7 @@
   X64/ReadLdtr.asm | MSFT
   X64/WriteIdtr.nasm| MSFT
   X64/WriteIdtr.asm | MSFT
+  X64/ReadIdtr.nasm| MSFT
   X64/ReadIdtr.asm | MSFT
   X64/WriteGdtr.asm | MSFT
   X64/ReadGdtr.asm | MSFT
@@ -622,6 +623,7 @@
   X64/ReadLdtr.asm | INTEL
   X64/WriteIdtr.nasm| INTEL
   X64/WriteIdtr.asm | INTEL
+  X64/ReadIdtr.nasm| INTEL
   X64/ReadIdtr.asm | INTEL
   X64/WriteGdtr.asm | INTEL
   X64/ReadGdtr.asm | INTEL

MdePkg/Library/BaseLib/X64/ReadIdtr.nasm

@@ -0,0 +1,38 @@
+;------------------------------------------------------------------------------
+;
+; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
+; This program and the accompanying materials
+; are licensed and made available under the terms and conditions of the BSD License
+; which accompanies this distribution.  The full text of the license may be found at
+; http://opensource.org/licenses/bsd-license.php.
+;
+; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+;
+; Module Name:
+;
+;   ReadIdtr.Asm
+;
+; Abstract:
+;
+;   AsmReadIdtr function
+;
+; Notes:
+;
+;------------------------------------------------------------------------------
+
+    DEFAULT REL
+    SECTION .text
+
+;------------------------------------------------------------------------------
+; VOID
+; EFIAPI
+; InternalX86ReadIdtr (
+;   OUT     IA32_DESCRIPTOR           *Idtr
+;   );
+;------------------------------------------------------------------------------
+global ASM_PFX(InternalX86ReadIdtr)
+ASM_PFX(InternalX86ReadIdtr):
+    sidt    [rcx]
+    ret
+