Switch makefile owners to MK_OWNERS

Bug: 278167548
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:5f2a464f9f1dd6536b257d873ad4c47bd0ae83f9)
Merged-In: Idb90ff62c5180bc81e358bad05df03d1c0ba2023
Change-Id: Idb90ff62c5180bc81e358bad05df03d1c0ba2023
1 file changed