Update prebuilt Clang to r416183b from Android.

https://android.googlesource.com/platform/prebuilts/clang/host/
linux-x86/+/06a71ddac05c22edb2d10b590e1769b3f8619bef

clang 12.0.5 (based on r416183b) from build 7284624.

Change-Id: I277a316abcf47307562d8b748b84870f31a72866
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/linux-x64/clang/include/lldb/Interpreter/OptionValueString.h b/linux-x64/clang/include/lldb/Interpreter/OptionValueString.h
index d9e76d8..ed44dae 100644
--- a/linux-x64/clang/include/lldb/Interpreter/OptionValueString.h
+++ b/linux-x64/clang/include/lldb/Interpreter/OptionValueString.h
@@ -6,8 +6,8 @@
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef liblldb_OptionValueString_h_
-#define liblldb_OptionValueString_h_
+#ifndef LLDB_INTERPRETER_OPTIONVALUESTRING_H
+#define LLDB_INTERPRETER_OPTIONVALUESTRING_H
 
 #include <string>
 
@@ -85,10 +85,9 @@
   SetValueFromString(const char *,
                      VarSetOperationType = eVarSetOperationAssign) = delete;
 
-  bool Clear() override {
+  void Clear() override {
     m_current_value = m_default_value;
     m_value_was_set = false;
-    return true;
   }
 
   lldb::OptionValueSP DeepCopy() const override;
@@ -136,4 +135,4 @@
 
 } // namespace lldb_private
 
-#endif // liblldb_OptionValueString_h_
+#endif // LLDB_INTERPRETER_OPTIONVALUESTRING_H