Switch makefile owners to MK_OWNERS

Bug: 278167548
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:e72b281d89f769d2cf5000538cd6e9f3793b983c)
Merged-In: I6259f2fb9e561ce0ee5a61c9b6abbb745ace9d25
Change-Id: I6259f2fb9e561ce0ee5a61c9b6abbb745ace9d25
1 file changed