* gnu/build/linux-boot.scm (make-static-device-nodes): New variable.
(<device-node>): New variable.
(read-static-device-nodes): New variable.
(report-system-error): New variable.
(catch-system-error): New variable.
(create-device-node): New variable.
(mkdir-p*): New variable.
Co-Authored-By: Ludovic Courtès <ludo@gnu.org>