[opt-viewer] Account for optimization records YAML files generated by LTO (llvm#135059)

The optimization records YAML files generated by Clang's LTO pipeline
are named "\*.opt.ld.yaml" rather than "\*.opt.yaml". This patch adds
that pattern into the search list of `find_opt_files` as well.

Author: mshockwave

llvm/tools/opt-viewer/optrecord.py

@@ -344,6 +344,8 @@ def find_opt_files(*dirs_or_files):
                     d for d in subdirs if not os.path.ismount(os.path.join(dir, d))
                 ]
                 for file in files:
-                    if fnmatch.fnmatch(file, "*.opt.yaml*"):
+                    if fnmatch.fnmatch(file, "*.opt.yaml*") or fnmatch.fnmatch(
+                        file, "*.opt.ld.yaml*"
+                    ):
                         all.append(os.path.join(dir, file))
     return all