LINUX: Indent osi_machdep.h maze

This one isn't so bad, actually, but it still benefits from some
indentation.

Reviewed-on: http://gerrit.openafs.org/8018
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementix.org>
(cherry picked from commit 579048cb1ec24b09a869928ceb521c8db4201a43)

Change-Id: I91bddcafe4141c5e6789b01cc4be1a879b6464d1
Reviewed-on: http://gerrit.openafs.org/9330
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Ken Dreyer <ktdreyer@ktdreyer.com>
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>