Update LLVM_PREBUILT_VERSION to clang-r344140

This commit updates LLVM_PREBUILT_VERSION to clang-r344140.

Bug: 111759196
Test: OUT_DIR=out ./prebuilts/clang-tools/build-prebuilts.sh
Change-Id: I8e8cb61f4174baa8bc9a9b3a5b6860c760536dde
1 file changed
tree: 8e33f4b5810c78074a110c0c4b59c0efd451e057
  1. darwin-x86/
  2. linux-x86/
  3. build-prebuilts.sh
  4. manifest.xml