Wifi: Add sepolicy files for hal_wifi_ext service

avc denied log:
avc: denied { search } for comm="wifi_ext@1.0-se" name="wifi" dev="dm-43" ino=365 scontext=u:r:hal_wifi_ext:s0 tcontext=u:object_r:updated_wifi_firmware_data_file:s0 tclass=dir permissive=1

Bug: 205779850
Test: pts -m PtsSELinuxTest -t com.google.android.selinux.pts.SELinuxTest
      #scanAvcDeniedLogRightAfterReboot
Change-Id: I0c41193b2b9c6a596f142f02c6fee4665fbf2011
2 files changed