Android.mk

+# Don't recurse into the platform makefiles. We don't care about them, and
+# we don't want to force a reset of BOARD_SEPOLICY_DIRS
+#
+# If you want to use these policies, add a
+#
+# include device/mediatek/sepolicy/sepolicy.mk
+#
+# to your device's BoardConfig. It is highly recommended that in case
+# you have your own BOARD_SEPOLICY_DIRS declaration,
+# the inclusion happens _before_ those lines

README.md

+# SELinux policy for MediaTek devices
+
+Don't recurse into the platform makefiles. We don't care about them, and we
+don't want to force a reset of `BOARD_SEPOLICY_DIRS`.
+
+If you want to use these policies, add a
+
+    include device/mediatek/sepolicy/sepolicy.mk
+
+to your device's BoardConfig. It is highly recommended that in case you have
+your own `BOARD_SEPOLICY_DIRS` declaration, the inclusion happens _before_
+those lines