[llvm] [flang] [flang][OpenMP] Add semantic check for target data (PR #71560)

[via llvm-commits]

NimishMishra wrote:

> But which standards will we try to keep up with? All standards starting from 1.1? Or the recent ones?
> 
> If you would like to proceed with checking based on the standard version then please write an RFC in Flang discourse.

Are we focussing mainly on OpenMP 5.0 for the first production-level release or beyond 5.0 too? Pinging @kiranktp too

https://github.com/llvm/llvm-project/pull/71560