80f91fc kernel-install/90-loaderentry: do not add multiple systemd.machine_id options

1 file Authored by Antonio Alvarez Feijoo a year ago, Committed by bluca a year ago,
    kernel-install/90-loaderentry: do not add multiple systemd.machine_id options
    
    Do not unconditionally add a new systemd.machine_id command line option, first
    check if it already exists with the expected value.
    
    Fixes #25203
    
    (cherry picked from commit 981502c5cc9ce32c3f77ff74aad87cd6f0da3b16)