Wakeup packet mark/mask configuration option

Rules will only be installed if a device specific config.xml overrides
the default values of mark and mask.

This change also fixes a bug where wakeup rules added by the wakeup
controller would never be removed because updateInterfaces() is not
invoked on wifi network change or disable.

Test: as follows
    - built
    - flashed
    - booted
    - Manually verified that mask/mark is set correctly
Bug: 28806131

(cherry picked from commit 668370b9)

Change-Id: I95e75b11b973707bcb428ea6498fbfd8e717b855