Adding mk file for CTPM's new sepolicy

Making a seperate makefile for CTPM's new sepolicy that will be
referenced by vendor/google/products/pixel_experience_2020_and_newer.mk

Bug: 202028512
Test: Compiled and built with new sepolicy, saw no avc:denied errors
Change-Id: If79814bbfdda534aaf19627022512bcb8f53f97d
1 file changed