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Disable list function for Synaptics sensor.

Vincent Huang requested to merge vincenth/libfprint:vincenth/add-resetdb-20210309 into master

We would like to disable list function in the future firmware, so provide fp_device_reset_storage for users to clear the database after installing new system. There are 3 patches in this MR:

  1. Add fp_device_supports_list() so fprintd could still use the old way to erase prints when the sensor supports list function.
  2. Add fp_device_reset_storage for the sensors which don't support list(), fprintd could invoke this function when first enrollment occurs.
  3. Update Synaptics driver to use resetdb() instead of list(), this commits needs fprintd updated, or Synaptics sensor may not work.

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