Add janitors to the OWNERS file am: a1bb7f26cc

Original change: https://android-review.googlesource.com/c/platform/external/toolchain-utils/+/3424119

Change-Id: I7d1e06e8c1b1ab80d8d28a36f0a63f6482d95f6c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>

OWNERS

diff --git a/OWNERS b/OWNERS
index 632a5d2..f315840 100644
--- a/OWNERS
+++ b/OWNERS
@@ -1,2 +1,3 @@
 set noparent
 include toolchain/llvm_android:/OWNERS
+include platform/system/core:/janitors/OWNERS #{LAST_RESORT_SUGGESTION}