The 5.7.1 version has a couple of regresions (one is a crash), fixed in version 5.7.2. However, DispmanX support was dropped starting with 5.7.2 so just bumping the version would break Buster based Pi installation.
Therefore the module was changed so that:
- for DispmanX platforms cherry pick the post 5.7.2 fixes manually and lock the version to 5.7.1
- for every other platform build the 5.7.2 version
