This allows the Magisk design-compliant module boot script to access `$MODDIR/system/$part` while the mounted overlay still points to `/$part` Fix https://github.com/tiann/KernelSU/issues/726
This allows the Magisk design-compliant module boot script to access `$MODDIR/system/$part` while the mounted overlay still points to `/$part` Fix https://github.com/tiann/KernelSU/issues/726