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/python3/include/python3.9/exports.h b/linux-x64/clang/python3/include/python3.9/exports.h
new file mode 100644
index 0000000..fc1a5c5
--- /dev/null
+++ b/linux-x64/clang/python3/include/python3.9/exports.h
@@ -0,0 +1,30 @@
+#ifndef Py_EXPORTS_H
+#define Py_EXPORTS_H
+
+#if defined(_WIN32) || defined(__CYGWIN__)
+    #define Py_IMPORTED_SYMBOL __declspec(dllimport)
+    #define Py_EXPORTED_SYMBOL __declspec(dllexport)
+    #define Py_LOCAL_SYMBOL
+#else
+/*
+ * If we only ever used gcc >= 5, we could use __has_attribute(visibility)
+ * as a cross-platform way to determine if visibility is supported. However,
+ * we may still need to support gcc >= 4, as some Ubuntu LTS and Centos versions
+ * have 4 < gcc < 5.
+ */
+    #ifndef __has_attribute
+      #define __has_attribute(x) 0  // Compatibility with non-clang compilers.
+    #endif
+    #if (defined(__GNUC__) && (__GNUC__ >= 4)) ||\
+        (defined(__clang__) && __has_attribute(visibility))
+        #define Py_IMPORTED_SYMBOL __attribute__ ((visibility ("default")))
+        #define Py_EXPORTED_SYMBOL __attribute__ ((visibility ("default")))
+        #define Py_LOCAL_SYMBOL  __attribute__ ((visibility ("hidden")))
+    #else
+        #define Py_IMPORTED_SYMBOL
+        #define Py_EXPORTED_SYMBOL
+        #define Py_LOCAL_SYMBOL
+    #endif
+#endif
+
+#endif /* Py_EXPORTS_H */