Update git submodules

* Update prebuilts/clang/host/linux-x86 from branch 'master'
  to 298018c51a9f8a6bcb371e41b3bf04c1581fecc6
  - Merge "Update prebuilt Clang to r344140b."
  - Update prebuilt Clang to r344140b.
    
    clang 8.0.4 (based on r344140) from build 5122994.
    
    Bug: http://b/119270185
    Test: N/A
    Change-Id: I398f34bb07cdbb382734559ae326bbfa45c9d241
    
1 file changed