[clang] [Driver] Add linker options to support statical linking to shared flang-rt on AIX. (PR #131822)

[Fangrui Song via cfe-commits]

================
@@ -127,9 +127,19 @@ void aix::Linker::ConstructJob(Compilation &C, const JobAction &JA,
   }
----------------
MaskRay wrote:

This change needs a test somewhere at flang/test/Driver/

https://github.com/llvm/llvm-project/pull/131822