fingerprint: Rework enrollment screen

This is based on the following changes, adapted to Android 12
considering the fact that AOSP now supports FOD as well as
fingerprint sensors embedded in the power button:

Author: d34d <clark@cyngn.com>
Date:   2016-06-23 11:21:45 -0700

    fingerprint: Allow devices to configure sensor location

    The text for enrolling a fingerprint always assumes the sensor is
    located on the back.  This patch adds a config integer that defines
    where the sensor is located on the device.
      0 = back
      1 = front
      2 = left side
      3 = right side

    This patch also adds a new drawable that shows the front of the device
    when applicable.

    Change-Id: Ia8f5f8ff4ba4d13d35aed3052f60ff665dd4f294
    TICKET: CYNGNOS-3089

Author: Paul Keith <javelinanddart@gmail.com>
Date:   2018-01-26 22:23:03 +0100

    FingerprintEnrollFindSensor: Don't overlay front for side sensors

    * Both the base image and the base image + overlay are equally nonsense
      for devices with a side fingerprint scanner, but for those that overlay
      a custom fingerprint enrollment graphic, this image overlay wreaks havoc
    * Only set this overlay to be visible if the sensor is on the front, to
      allow devices with side sensors to only overlay the base image

    Change-Id: I7cbcea4830d4526cf9f7d139e7f84f21117fa9c4

Author: Michael W <baddaemon87@gmail.com>
Date:   Thu Jan 17 21:44:28 2019 +0100

    Settings: Make find fingerprint look great again

    * The current logic places the animation based on the size of
      the whole overlay instead of the image, which is a fixed-size png
    * Get the size of the image instead and place the dot relative to it
    * Also use "wrap_content" and add a padding to the top so the
      distance to the text is a fixed thing, not depending on how
      much space relative to the wanted space it actually takes

    * Preview: https://imgur.com/a/XanJ2aP

    Change-Id: I2bd08cee1abd1c6bad78ca1efc2189e573ded3cc

Author: LuK1337 <priv.luk@gmail.com>
Date:   Sat Dec 15 17:11:41 2018 +0100

    fingerprint: Remove unnecessary spacing in enroll layout

    * This makes it look ugly on 480 dpi devices.

    Change-Id: Ia1bbd443063a125878dddd12e5c6a816d289fb82

Change-Id: If372ef50c4a719e89a4e80cc20e3eb445af61bc6