When user supplied --help/-h, program should output to stdout the usage,
not to stderr. It's the expected behavior, what the user asked for,
not something to log or an error.
This is a broken option that only leads to misery and incompatabilities
with other systems. Kbuild doesn't come close to supporting directories
other than /lib/modules with several targets simply failing without
hacky fixes. Simply remove the option and all traces of it, as it
doesn't make sense in today's world.
