Update OWNERS to go/ab/clang-tools build scripts

So it's easier for the LLVM toolchain team to maintain them.

Test: N/A
Change-Id: Ic4afb996a5c262cb233774cd4bbe114f0fe69663
diff --git a/vndk/tools/header-checker/OWNERS b/vndk/tools/header-checker/OWNERS
index 69bf8a8..9bb94e2 100644
--- a/vndk/tools/header-checker/OWNERS
+++ b/vndk/tools/header-checker/OWNERS
@@ -2,3 +2,5 @@
 hsinyichen@google.com
 jchowdhary@google.com
 tyanh@google.com
+
+per-file android/* = pirama@google.com, srhines@google.com