[flang] Add support for -f[no-]verbose-asm (#130788)

This flag provides extra commentary in the assembly output.
diff --git a/clang/lib/Driver/ToolChains/Flang.cpp b/clang/lib/Driver/ToolChains/Flang.cpp
index 3ee305f..5dbc5cb 100644
--- a/clang/lib/Driver/ToolChains/Flang.cpp
+++ b/clang/lib/Driver/ToolChains/Flang.cpp
@@ -514,6 +514,9 @@
     else
       CmdArgs.push_back(A->getValue());
   }
+
+  Args.addAllArgs(CmdArgs,
+                  {options::OPT_fverbose_asm, options::OPT_fno_verbose_asm});
 }
 
 void Flang::addOffloadOptions(Compilation &C, const InputInfoList &Inputs,