Switch makefile owners to MK_OWNERS

Bug: 278167548
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:9bab86ac7deaae3497b3b75ef7d3d8976ff20894)
Merged-In: I141c255cad00dd9dcd9c3491e5bd3b18a9c9fcfd
Change-Id: I141c255cad00dd9dcd9c3491e5bd3b18a9c9fcfd
1 file changed