[llvm] [DebugInfo] Support to get TU for hash from .debug_types.dwo section in DWARF4. (PR #161067)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp,h -- llvm/include/llvm/DebugInfo/DWARF/DWARFUnit.h llvm/lib/DebugInfo/DWARF/DWARFContext.cpp llvm/lib/DebugInfo/DWARF/DWARFUnit.cpp --diff_from_common_commit
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/include/llvm/DebugInfo/DWARF/DWARFUnit.h b/llvm/include/llvm/DebugInfo/DWARF/DWARFUnit.h
index 836301ae8..40786bda9 100644
--- a/llvm/include/llvm/DebugInfo/DWARF/DWARFUnit.h
+++ b/llvm/include/llvm/DebugInfo/DWARF/DWARFUnit.h
@@ -143,7 +143,8 @@ public:
       decltype(make_filter_range(std::declval<iterator_range>(), isCompileUnit));
 
   LLVM_ABI DWARFUnit *getUnitForOffset(uint64_t Offset) const;
-  /// Returns the Unit from a .debug_info or .debug_types section by the index entry.
+  /// Returns the Unit from a .debug_info or .debug_types section by the index
+  /// entry.
   LLVM_ABI DWARFUnit *
   getUnitForIndexEntry(const DWARFUnitIndex::Entry &E, DWARFSectionKind Sec,
                        const DWARFSection *Section = nullptr);

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https://github.com/llvm/llvm-project/pull/161067