[SID] Is there a way to manually specify the dtb file for systemd-boot entry auto-generation

[Qu Wenruo]

Hi,

It looks like Debian Sid already has a hook to update the systemd-boot 
entry, which is pretty awesome.

But it doesn't include the following things:

- proper "root=" options to specify the root fs

- proper "devicetree" option to specify the dtb file
  Which is especially a problem for arm64.

Is there doc mentioning how to properly specify the missing options 
somewhere?

Thanks,
Qu