RedfishPkg/RedfishCrtLib: fix unresolved external symbol issue

-Fix below compiler error reported in edk2 CI.
ERROR - Linker #2001 from JsonLib.lib(load.obj) : unresolved external
symbol __ftol2
-The file MathFtol.c is copied from IntrinsicLib in CryptoPkg.
-Add MathFtol.c to EccCheck IgnoreFiles.

Signed-off-by: Nickle Wang <nicklew@nvidia.com>
Cc: Abner Chang <abner.chang@amd.com>
Cc: Igor Kulchytskyy <igork@ami.com>
Cc: Nick Ramirez <nramirez@nvidia.com>
Reviewed-by: Abner Chang <abner.chang@amd.com>
Reviewed-by: Igor Kulchytskyy <igork@ami.com>

RedfishPkg/PrivateLibrary/RedfishCrtLib/Ia32/MathFtol.c

@@ -0,0 +1,37 @@
+/** @file This file is copied from CryptoPkg/Library/IntrinsicLib/Ia32/MathFtol.c
+  64-bit Math Worker Function.
+  The 32-bit versions of C compiler generate calls to library routines
+  to handle 64-bit math. These functions use non-standard calling conventions.
+
+Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+/*
+ * Floating point to integer conversion.
+ */
+__declspec(naked) void
+_ftol2 (
+  void
+  )
+{
+  _asm {
+    fistp qword ptr [esp-8]
+    mov   edx, [esp-4]
+    mov   eax, [esp-8]
+    ret
+  }
+}
+
+__declspec(naked) void
+_ftol2_sse (
+  void
+  )
+{
+  _asm {
+    fistp dword ptr [esp-4]
+    mov   eax,[esp-4]
+    ret
+  }
+}