Switch makefile owners to MK_OWNERS

Bug: 278167548
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:767a506f07f82fb922c887f14b850d1cb5292227)
Merged-In: Iffb4e4aaaf25a11b9ef31fdb9f3838da709e1723
Change-Id: Iffb4e4aaaf25a11b9ef31fdb9f3838da709e1723
diff --git a/OWNERS b/OWNERS
index feed301..4a2962a 100644
--- a/OWNERS
+++ b/OWNERS
@@ -2,4 +2,4 @@
 per-file powerhint.json = wvw@google.com,joaodias@google.com,jenhaochen@google.com,rkganesh@google.com,jychen@google.com
 
 # per-file for Pixel device makefiles, see go/pixel-device-mk-owner-checklist for details.
-per-file *.mk=file:device/google/gs-common:main:/OWNERS
+per-file *.mk=file:device/google/gs-common:main:/MK_OWNERS