ena.4: optimize apropos and hardware

[concussious.bugzilla_runbox.com]

Summary

Remove "FreeBSD kernel driver for" and "family", and
add "AWS EC2" and "driver" to the document description
for better search discoveribility and consistency with
other driver manuals.

Rewrite the introductory sentance to the HARDWARE section
with driver name for inclusion in hardware release notes.

MFC to: 14.2R, if willing

[cperciva]

Add Osama and Arthur since they maintain this driver.

[osamaabb_amazon.com]

Let's MFC to 14.2 as well

[concussious.bugzilla_runbox.com]

Any chance that since I work for Google and you work for Amazon, this commit can have both "sponsored by" trailers? I think that would be very funny, show the heart of FreeBSD community, and harmless fun. I did this at home so I'm not required to, but checked the policy and I'm allowed to. If that a bad idea (I'm very junior)? If so, let me know and I can even delete this message.{F102595716}

[cperciva]

In D47565#1084857, @osamaabb_amazon.com wrote:

Let's MFC to 14.2 as well

Too late for that I'm afraid; we're now at "critical changes only". (The release announcement is scheduled for re:Invent, and I'm sure you're seeing similar freezes internally!)

[cperciva]

In D47565#1084915, @concussious.bugzilla_runbox.com wrote:

Any chance that since I work for Google and you work for Amazon, this commit can have both "sponsored by" trailers? I think that would be very funny, show the heart of FreeBSD community, and harmless fun. I did this at home so I'm not required to, but checked the policy and I'm allowed to. If that a bad idea (I'm very junior)? If so, let me know and I can even delete this message.{F102595716}

Let's do it. You're not a committer yet, right? Email me the patch and I'll push it.

[cperciva]

Oops, I should have added a Differential Revision: trailer before pushing this. Anyway, it's in the tree now.

https://cgit.FreeBSD.org/src/commit/?id=13e82893d8588d09e6d721b38ba5d775b9b96a0e

[concussious.bugzilla_runbox.com]

Thank you!