[AMDGPU] Reserve AMDGPU ELF e_flags machine 0x44

llvm/docs/AMDGPUUsage.rst

.. table:: AMDGPU ``EF_AMDGPU_MACH`` Values
      ``EF_AMDGPU_MACH_AMDGCN_GFX805``     0x03c      ``gfx805``
      ``EF_AMDGPU_MACH_AMDGCN_GFX1035``    0x03d      ``gfx1035``
      ``EF_AMDGPU_MACH_AMDGCN_GFX1034``    0x03e      ``gfx1034``
      ``EF_AMDGPU_MACH_AMDGCN_GFX90A``     0x03f      ``gfx90a``
      *reserved*                           0x040      Reserved.
      *reserved*                           0x041      Reserved.
      ``EF_AMDGPU_MACH_AMDGCN_GFX1013``    0x042      ``gfx1013``
      *reserved*                           0x043      Reserved.
+     *reserved*                           0x044      Reserved.
      ==================================== ========== =============================
 
 Sections
 --------
 
 An AMDGPU target ELF code object has the standard ELF sections which include:
 
   .. table:: AMDGPU ELF Sections

llvm/include/llvm/BinaryFormat/ELF.h

enum : unsigned {
   EF_AMDGPU_MACH_AMDGCN_GFX805        = 0x03c,
   EF_AMDGPU_MACH_AMDGCN_GFX1035       = 0x03d,
   EF_AMDGPU_MACH_AMDGCN_GFX1034       = 0x03e,
   EF_AMDGPU_MACH_AMDGCN_GFX90A        = 0x03f,
   EF_AMDGPU_MACH_AMDGCN_RESERVED_0X40 = 0x040,
   EF_AMDGPU_MACH_AMDGCN_RESERVED_0X41 = 0x041,
   EF_AMDGPU_MACH_AMDGCN_GFX1013       = 0x042,
   EF_AMDGPU_MACH_AMDGCN_RESERVED_0X43 = 0x043,
+  EF_AMDGPU_MACH_AMDGCN_RESERVED_0X44 = 0x044,
 
   // First/last AMDGCN-based processors.
   EF_AMDGPU_MACH_AMDGCN_FIRST = EF_AMDGPU_MACH_AMDGCN_GFX600,
-  EF_AMDGPU_MACH_AMDGCN_LAST = EF_AMDGPU_MACH_AMDGCN_RESERVED_0X43,
+  EF_AMDGPU_MACH_AMDGCN_LAST = EF_AMDGPU_MACH_AMDGCN_RESERVED_0X44,
 
   // Indicates if the "xnack" target feature is enabled for all code contained
   // in the object.
   //
   // Only valid for ELFOSABI_AMDGPU_HSA and ELFABIVERSION_AMDGPU_HSA_V2.
   EF_AMDGPU_FEATURE_XNACK_V2 = 0x01,
   // Indicates if the trap handler is enabled for all code contained
   // in the object.