[Android] Revert switch preferences to checkbox as leanback doesn't support it

[Nicolas Pomepuy]

vlc-android | branch: master | Nicolas Pomepuy <nicolas.pomepuy at gmail.com> | Thu Aug  8 12:04:08 2019 +0200| [123e7cc1ccf41a0347ead6585bc9ab754ab34f23] | committer: Geoffrey Métais

Revert switch preferences to checkbox as leanback doesn't support it

> https://code.videolan.org/videolan/vlc-android/commit/123e7cc1ccf41a0347ead6585bc9ab754ab34f23
---

 vlc-android/res/xml/preferences.xml                |  4 ++--
 vlc-android/res/xml/preferences_adv.xml            |  8 +++----
 vlc-android/res/xml/preferences_audio.xml          | 16 ++++++-------
 vlc-android/res/xml/preferences_casting.xml        |  2 +-
 vlc-android/res/xml/preferences_dev.xml            |  2 +-
 vlc-android/res/xml/preferences_perf.xml           |  4 ++--
 vlc-android/res/xml/preferences_subtitles.xml      |  6 ++---
 vlc-android/res/xml/preferences_ui.xml             | 20 ++++++++--------
 vlc-android/res/xml/preferences_video.xml          | 28 +++++++++++-----------
 .../preferences/PreferencesExtensionFragment.kt    |  2 +-
 10 files changed, 46 insertions(+), 46 deletions(-)

Diff:   https://code.videolan.org/videolan/vlc-android/commit/123e7cc1ccf41a0347ead6585bc9ab754ab34f23