Update prebuilt Clang to r346389b.

clang 8.0.6 (based on r346389b) from build 5166481.
Test: N/A

Change-Id: I3abbaa23618c27b9c95b37c3eb3dec636a76615c
Signed-off-by: Harsh Shandilya <msfjarvis@gmail.com>
2630 files changed