Update prebuilt Clang to build 4556391

Built from version 6.0.1.

Bug: 68397894
Test: N/A
Change-Id: I178501d01776d13bb45a18eb74df352ba33fd3de
1871 files changed
tree: 8fa3448dccf38c88f00a4d63d6d5ba156a247d19
  1. clang-4393122/
  2. clang-4479392/
  3. clang-4536805/
  4. clang-4556391/
  5. OWNERS