cxgbetool.8: Fix some minor mechanical issuesstable/14

+ Tag SPDX
+ Macros should not appear in titles, write a hopefully better title
+ Nm needs to be on it's own line in SYNOPSIS, fold it so this page
  does not appear in unrelated search results (test case `apropos fw`)
+ Remove Ns's that do nothing and generate linter errors
+ Move list initializers to where they render, correcting linter errors

Unresolved:
This page produces an error when rendered due to the macros table.
I don't know how to fix that yet, but I'm interested in learning!

Reviewed by:		mhorne
Approved by:		mhorne (mentor)
Differential Revision:	https://reviews.freebsd.org/D50320

(cherry picked from commit 8f25fac9ce2339ab5599e3af0ef7c6a1ea098aab)

0 files changed, 0 insertions, 0 deletions