[AMDGPU] Reserve AMDGPU ELF e_flags machine 0x45

Reviewed By: rampitec

Differential Revision: https://reviews.llvm.org/D106249

Author: t-tye

llvm/docs/AMDGPUUsage.rst

@@ -1165,6 +1165,7 @@ The AMDGPU backend uses the following ELF header:
      ``EF_AMDGPU_MACH_AMDGCN_GFX1013``    0x042      ``gfx1013``
      *reserved*                           0x043      Reserved.
      *reserved*                           0x044      Reserved.
+     *reserved*                           0x045      Reserved.
      ==================================== ========== =============================
 
 Sections

llvm/include/llvm/BinaryFormat/ELF.h

@@ -747,10 +747,11 @@ enum : unsigned {
   EF_AMDGPU_MACH_AMDGCN_GFX1013       = 0x042,
   EF_AMDGPU_MACH_AMDGCN_RESERVED_0X43 = 0x043,
   EF_AMDGPU_MACH_AMDGCN_RESERVED_0X44 = 0x044,
+  EF_AMDGPU_MACH_AMDGCN_RESERVED_0X45 = 0x045,
 
   // 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_0X44,
+  EF_AMDGPU_MACH_AMDGCN_LAST = EF_AMDGPU_MACH_AMDGCN_RESERVED_0X45,
 
   // Indicates if the "xnack" target feature is enabled for all code contained
   // in the object.