[clang] [Clang][OpenMP]Default clause variable category (PR #157063)

[David Pagan via cfe-commits]

ddpagan wrote:

> > Update OpenMPSupport.rst and clang release notes
> 
> OpenMPSupport.rst has entry: | variable-category on default clause | :part:`In Progress` | :none:`unclaimed` | | This was done for me by my colleague, Ritanya Bharadwaj.

This was done initially to note that someone was actively working on the feature. Since it's now complete, the entry in OpenMPSupport.rst should be updated to :good:`done`



https://github.com/llvm/llvm-project/pull/157063