Refactor OWNERS in platform/prebuilts/build-tools

Test: treehugger
Bug: 170407947
Change-Id: I74835ca338eff251b3ad17a0242835b50ab02232
diff --git a/OWNERS b/OWNERS
index 89b446a..1ee860c 100644
--- a/OWNERS
+++ b/OWNERS
@@ -1,2 +1,2 @@
-ccross@android.com
-dwillemsen@google.com
+include platform/build/soong:/OWNERS
+