[llvm] [DirectX] Adding support for Root Descriptors in obj2yaml/yaml2obj (PR #137259)

[Sarah Spall via llvm-commits]

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@@ -72,9 +72,24 @@ ROOT_ELEMENT_FLAG(11, SamplerHeapDirectlyIndexed)
 #undef ROOT_ELEMENT_FLAG
 #endif // ROOT_ELEMENT_FLAG
 
+ 
+// ROOT_ELEMENT_FLAG(bit offset for the flag, name).
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spall wrote:

is this meant to say ROOT_DESCRIPTOR_FLAG?

https://github.com/llvm/llvm-project/pull/137259