sys: Remove $FreeBSD$: two-line .h pattern

Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/

cam/nvme: Remove spurious newline during periph detach announcement

Other protocol denounce routines use a "short" variant of announce
that does not include a trailing newline.

Sponsored by: Chelsio Communications
Differential Revision: https://reviews.freebsd.org/D41176

cam: Use FreeBSD standard copyright

For CAM, move to the FreeBSD standard copyright rather than the 'put it
at the front' variation. This variaiton has been flagged as potentially
problematic in other contexts. Since this variation wasn't a conscious
decision on our part, use the standard license from src/COPYRIGHT.
Also, remove the -FreeBSD suffix in SPDX-License-Identifier. It's
obsolete at SPDX and even the original text didn't match it.

MFC After: 3 days
Sponsored by: Netflix

Make cam_error_print() decode NVMe commands.

MFC after: 2 weeks

Regularize the Netflix copyright

Use recent best practices for Copyright form at the top of
the license:
1. Remove all the All Rights Reserved clauses on our stuff. Where we
piggybacked others, use a separate line to make things clear.
2. Use "Netflix, Inc." everywhere.
3. Use a single line for the copyright for grep friendliness.
4. Use date ranges in all places for our stuff.

Approved by: Netflix Legal (who gave me the form), adrian@ (pmc files)

Remove the 'All Rights Reserved' clause from some of the stuff I've
done for Netflix, since I'm in the neighborhood.

SPDX: finish tagging sys/cam.

Properly decode NVMe state of the drive and print out the information
in the attach to more closely match what SCSI and ATA attached
storage provides.

Sponsored by: Netflix

Provide link speed data in XPT_GET_TRAN_SETTINGS. Provide full version
information for that and XPT_PATH_INQ. Provide macros to encode/decode
major/minor versions. Read the link speed and lane count to compute
the base_transfer_speed for XPT_PATH_INQ.

Sponsored by: Netflix

Fix NVMe's use of XPT_GDEV_TYPE

This patch changes the way XPT_GDEV_TYPE works for NVMe. The current
ccb_getdev structure includes pointers to the NVMe Identify Controller
and Namespace structures, but these are kernel virtual addresses which
are not accessible from user space.

As an alternative, the patch changes the pointers into padding in
ccb_getdev and adds two new types to ccb_dev_advinfo to retrieve the
Identify Controller (CDAI_TYPE_NVME_CNTRL) and Namespace
(CDAI_TYPE_NVME_NS) data structures.

Reviewed By: rpokala, imp
Differential Revision: https://reviews.freebsd.org/D10466
Submitted by: Chuck Tuffli

New NVMe front end (nda).