Remove $FreeBSD$: two-line nroff pattern

Remove /^\.\\"\n\.\\"\s*\$FreeBSD\$$\n/

mpsutil(8): Remove a stray paragraph

Spotted by running `mandoc -Tlint usr.sbin/mpsutil/mpsutil.8`.

Reviewed by: imp
Pull Request: https://github.com/freebsd/freebsd-src/pull/729

mpsutil(8): Improve English usage

Reviewed by: imp
Pull Request: https://github.com/freebsd/freebsd-src/pull/729

mpsutil: extend show adapter information, add NCQ control

'show adapter' now shows PCIe width and speed, IOC Speed, and the
temperature of the controller.

A new command, 'set ncq', is added.
It enables or disables SATA NCQ in the NVRAM of the card.
Its current setting is added to 'show adapter' as well.

PR: 254841
MFC after: 2 weeks
Relnotes: perhaps

mprutil: add big endian support

This fix mprutil on big endian platforms, as follow up of D25785.

Flash operations are still not working, such as MPI2_FUNCTION_FW_UPLOAD
failing due to timeout.

Firmware version used during tests: 16.00.01.00

Submitted by: Andre Fernando da Silva <andre.silva@eldorado.org.br>
Reviewed by: luporl, Sreekanth Reddy <sreekanth.reddy@broadcom.com> (by e-mail)
Sponsored by: Eldorado Research Institute (eldorado.org.br)
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D26040

mpsutil.8: fix typos in the man page

MFC after: 2 weeks
Sponsored by: Axcient

mpsutil(8): Remove trailing whitespace

MFC after: 1 week

mpsutil/mprutil: add flash subcommand

the flash subcommand allows to save/update firmware and bios for LSI Fusion-MPT
2/3 controllers (mps(4) and mpr(4))

Tested by: allanjude
Reviewed by: wblock (manpage)
Relnotes: yes
Sponsored by: Gandi.net
Differential Revision: https://reviews.freebsd.org/D4026

Replace the manpage with one that actually describes the utility

Sponsored by: Gandi.net

Iniital hack of mpsutil