[flang] [llvm] [Flang][OpenMP] Fix mapping of character type with LEN > 1 specified (PR #154172)

[via llvm-commits]

agozillon wrote:

Thank you both again for the review! I'll try to land this PR after the final minor update of the comment in the next day or so :-)

https://github.com/llvm/llvm-project/pull/154172