Replace "args.logfd" with "pmb.helpers.logging.logfd" in order to avoid passing "args" to all functions that only use it to write to logfd. This is the first step to get rid of this args-passed-to-all-functions pattern in pmbootstrap.
Device kernels that enable zram support can use `pmb:kconfigcheck-zram` to protect against kconfig regressions that disable support for zram.