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

Change-Id: I2380b2383a593da35880d81cbade6eae4f79a776