uart: Add support for Brainboxes / Intashield serial cards.

PR: 283226
Reported by: Cameron Williams

puc: Add support for Exar XR17V354 Quad PCI Express UART.

PR: 257207
MFC after: 1 week

sys: Remove $FreeBSD$: one-line .c pattern

Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of BSD-2-Clause.

Discussed with: pfg
MFC After: 3 days
Sponsored by: Netflix

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puc: clean up empty lines in .c and .h files

Merge ^/head r357662 through r357854.

Miscellaneous typo fixes

Submitted by: Gordon Bergling <gbergling_gmail.com>
Differential Revision: https://reviews.freebsd.org/D23453

puc(4): Add provisional support for Exar XR17V352

Reportedly, this is sufficient for 4800bps use, but maybe not any better.

PR: 228781
Submitted by: peo AT nethead.se

sys/dev: further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error

sys/dev: further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

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MFH @r294567

MFH

Sponsored by: The FreeBSD Foundation

Merge ^/head r293430 through r293685.

- Add support for Advantech PCI-1602 Rev. B1 and PCI-1603 cards. [1]
- Add a description of Advantech PCI-1602 Rev. A boards. [1]
- Properly set up REG_ACR also for PCI-1602 Rev. A based on what the

- Add support for Advantech PCI-1602 Rev. B1 and PCI-1603 cards. [1]
- Add a description of Advantech PCI-1602 Rev. A boards. [1]
- Properly set up REG_ACR also for PCI-1602 Rev. A based on what the
Advantech-supplied Linux driver does.
- Additionally use the macros of <dev/ic/ns16550.h> to replace existing
magic values and get rid of trivial comments.
- Fix the style of some comments.

PR: 205359 [1]
Submitted by: Jan Mikkelsen (original patch) [1]

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MFH r289384-r293170

Sponsored by: The FreeBSD Foundation

- Add entries for the more prominent members of the Digi International
Neo series, which are based on Exar PCI chips.
- Mark some unused parameters as such.
- Fix style

MFC after: 3 days

- Add an entry for the SIIG Cyber 2SP1 PCIe adapter, which is based
on an Oxford Semiconductor OX16PCI954 but uses only two ports and
a non-default clock rate.
- Fix style/whitespace

PR: 176407

- Add an entry for the SIIG Cyber 2SP1 PCIe adapter, which is based
on an Oxford Semiconductor OX16PCI954 but uses only two ports and
a non-default clock rate.
- Fix style/whitespace

PR: 176407
MFC after: 3 days

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Merge sync of head

Reintegrate head: r274132-r277384

Sponsored by: The FreeBSD Foundation

Reintegrate head revisions r273096-r277147

Sponsored by: The FreeBSD Foundation

MFhead @ r276594

puc(4): Add an entry for the Feasso PCI FPP-02 2S1P card.

MFC after: 1 week

Merge from head@274682

Sync to HEAD@r274095.

puc(4): add an entry for the Oxford Semiconductor OXPCIe952 1S1P card.

Submitted by: Alex Burlyga <alex.burlyga.ietf at gmail.com>
MFC after: 1 week

MFC @ r266724

An SVM update will follow this.