LinuxKPI: Add static_assert() macro

[wulf]

Summary

And move it along BUILD_BUG family in to
linux/build_bug.h to match Linux.

Sponsored by: Serenity Cyber Security, LLC
MFC after: 1 week

[bz]

sys/compat/linuxkpi/common/include/linux/build_bug.h

3

This last version of BUILD_BUG_ON() by itself is just:

• Copyright (c) 2021 The FreeBSD Foundation *
• Portions of this software were developed by Björn Zeeb
• under sponsorship from the FreeBSD Foundation. *

Other bits by @markj according to https://reviews.freebsd.org/D10985,
Yourself 64dab63f3b3b6
hselasky / Mellanox 2460cbb4a666f217ec32dd595aa9f38ce0497fe5

So maybe cleanup the (c) on the file given this changes the context.

[wulf]

Change copyright owners to match git blame output

[wulf]

Fix typo

[bz]

Could probably get an SPDX tag.