Update prebuilt Clang to r365631c1 from Android.

The version we had was segfaulting.

Bug: 132420445
Change-Id: Icb45a6fe0b4e2166f7895e669df1157cec9fb4e0
diff --git a/linux-x64/clang/include/llvm/Analysis/ConstantFolding.h b/linux-x64/clang/include/llvm/Analysis/ConstantFolding.h
index 43a2df0..2385b6f 100644
--- a/linux-x64/clang/include/llvm/Analysis/ConstantFolding.h
+++ b/linux-x64/clang/include/llvm/Analysis/ConstantFolding.h
@@ -71,6 +71,12 @@
                                 Constant *RHS, const DataLayout &DL,
                                 const TargetLibraryInfo *TLI = nullptr);
 
+/// Attempt to constant fold a unary operation with the specified
+/// operand. If it fails, it returns a constant expression of the specified
+/// operands.
+Constant *ConstantFoldUnaryOpOperand(unsigned Opcode, Constant *Op,
+                                     const DataLayout &DL);
+
 /// Attempt to constant fold a binary operation with the specified
 /// operands.  If it fails, it returns a constant expression of the specified
 /// operands.