fm10k: TRIVIAL fix up ordering of __always_unused and style

fm10k: TRIVIAL fix up ordering of __always_unused and style

Fix some style issues in debugfs code, and correct ordering of void and
__always_unused. Technically, the order does not matter, but preferred
style is to put the macro between the type and name.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Krishneil Singh <krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Orabug: 25394529
(cherry picked from commit 6fbc6b358b3f63e701d15e9d330a3b0dbb03f802)
Signed-off-by: Jack Vogel <jack.vogel@oracle.com>